159:
1925:
2460:
6288:
2149:
771:
2158:
5631:
180:
999:
1018:. Though fossils from Europe and Africa have been assigned to the group, their classification is disputed. It is unclear where the group originated; both cariamids and phorusrhacids may have arisen in South America, or arrived from elsewhere when southern continents were closer together or when sea levels were lower. Since phorusrhacids survived until the Pleistocene, they appear to have been more successful than the South American
523:
514:
6299:
796:
3815:
787:
778:
6294:
814:
805:
834:
840:
2218:, the skull of the phorusrhacid showed relatively high stress under sideways loadings, but low stress where force was applied up and down, and in simulations of "pullback" where the head returned to its normal position. Due to the relative weakness of the skull at the sides and midline, these researchers considered it unlikely that
5142:
3482:
2083:
suggested 27 m/s (97 km/h; 60 mph); the latter is greater than that of a modern ostrich, approaching that of a cheetah, 29 m/s (100 km/h; 65 mph). They found these estimates unlikely due to the large body size of these birds, and instead suggested the strength could have
2247:
were adapted to carrying a large head and for raising the head after the neck had been fully extended. The researchers assumed same would be true for other large, big-headed phorusrhacids. A 2020 study of phorusrhacid skull morphology by
Degrange found that there were two main morphotypes within the
2042:
that dominated
Cenozoic South America in the absence of placental mammalian predators. They co-existed with some large, carnivorous borhyaenid mammals for much of their existence. Earlier hypotheses of phorusrhacid feeding ecology were mainly inferred from their large skulls with hooked beaks rather
1993:
dinosaurs, such as the dromaeosaurs. It was later pointed out by Gould and
Quitmyer in a 2005 study that demonstrated that this wing joint is not unique and is present in seriemas, which do not have specialized grasping hands. The wing bones articulated in an unusual joint-like structure, suggesting
2483:
era. This period of separation from the rest of the Earth's continents led to an age of unique mammalian and avian evolution, with the dominance of phorusrhacids and sparassodonts as predators in contrast to the North
American placental carnivores. The fauna of North America was composed of living
2050:
Alvarenga and
Elizabeth Höfling made some general remarks about phorusrhacid habits in a 2003 article. They were flightless, as evidenced by the proportional size of their wings and body mass, and the wing-size was more reduced in larger members of the group. These researchers pointed out that the
1811:
due to the fragmentary nature of the known specimens. In 1995, Jon A. Baskin proposed that a 2-meter (6.6 ft) tall individual would have weighed 150 kilograms (330 lb), but the 2005 study which cited Baskin suggested it to be over 300 kilograms (660 lb). In spite of this, it would
2100:
inside the bones, or by using the legs as kicking weapons (like some modern ground birds do), consistent with the large, curved, and sideways compressed claws known in some phorusrhacids. They also suggested future studies could examine whether they could have used their beaks and claws against
421:
at 1.4 to 2 meters (4.6 to 6.6 ft) in height and over 300 kilograms (660 lb) in body mass. Due to the fragmentary fossils, the anatomy is poorly known, but several distinct characters on the tarsometatarsus have been observed. The skull is estimated to have been between 36 centimeters
1989:. It also had a relatively rigid wrist, which would not have allowed the hand to fold back against the arm to the same degree as other birds. This led R. M. Chandler to suggest in a 1994 paper that the wings may have supported some type of clawed, mobile hand similar to the hands of non-avian
743:
were the first to discover fossils in the clay sediments in 1967, sparking a wave of large-scale excavations by curator David Webb of the
Florida Museum of Natural History. Work on the site lasted from 1967 to 1973, during which over 18,000 fossils were collected. Of the many fossils, only 12
2256:
and other large members, that was more specialized, with more rigid skulls. Despite the differences, studies have shown the two types handled prey similarly; the more rigid skulls and resulting larger bite force of the "Terror Bird" type would have been an adaptation to handling larger prey.
1872:
is incomplete, consisting of its frontmost end including the characteristic long, sharp beak tip of
Phorusrhacidae that would have been used for hunting. Its preserved length is 9 centimeters (3.5 in) with a height of 5.5 centimeters (2.2 in) with a triangular shape in vertical
723:, 27 have been unearthed from the Santa Fe River, many of them collected in the 1960s and '70s following Brodkorb's description. The Santa Fe River specimens come from two localities within the river, 1a and 1b. The former locality is more productive, producing elements of
1860:(cheek bones) have been mentioned in scientific literature. The skull is estimated to have been between 36 centimeters (14 in) and 56 centimeters (22 in) in length, one of the largest known from any bird. These sizes are based on the size of quadratojugals from
4649:
Emslie, Steven D.; Czaplewski, Nicholas J. (1999). "Two New Fossil Eagles from the Late
Pliocene (Late Blancan) of Florida and Arizona and Their Biogeographic Implications". In Storrs, S. L.; Wellnhofer, P.; Mourer-Chauviré, C.; Steadman, D. W.; Martin, L.D. (eds.).
2532:
made it to North
America millions of years before the volcanic formation of Panama. The period following the Isthmus's foundation saw the extinction of many groups, including the South American phorusrhacids; the last phorusrhacids went extinct in the Pleistocene.
3479:
2293:
scrub are known to have occupied the area, similar to the modern flora. More recent interpretations suggest that the environment of
Pliocene-Pleistocene Florida was a mosaic of different communities (i.e. a mixture of forests, savannas, wetlands, etc.), and that
760:. As for Port Charlotte, a single fossil, a partial pedal phalanx from the fourth digit, was donated to the UF in 1990. Another partial tarsometatarsus was reportedly found in a shell pit in Sarasota County, making it the only other tarsometatarsus known from
2504:. Phorusrhacids evolved in South America to fill gaps in niches otherwise filled by placentals in other continents, such as that of apex predator. Flight-capable birds could more easily migrate between continents, creating a more homogenous avian fauna.
2324:, the climate was cooler but temperatures did not reach those of the Pleistocene, creating a warm period. Sea levels were higher, but this was reversed at the end of the Pliocene during the beginning of large glaciations that fostered the Pleistocene's
1911:
development in the smaller quadratojugal, meaning they both come from adults. In the lower jaw, a partial mandible is known but it is unfigured and undescribed in scientific literature. Being a phorusrhacine, it would have had a long and narrow
873:
fossils from outside Florida. The pit was largely disorganized, with fossils dating to the Early Pliocene and Late Pleistocene jumbled together. The description followed Brodkorb's erroneous Late Pleistocene age assessment. Later analyses of
2222:
engaged in potentially risky behavior that involved using its beak to subdue large, struggling prey. Instead, they suggested that it fed on smaller prey that could be killed and consumed more safely by swallowing it whole. Alternatively, if
2577:
fossils by MacFadden and colleagues in 2007 dispelled this, demonstrating that the genus lived during the Pliocene and earliest Pleistocene. Some phorusrhacid material from South America dates to the Late Pleistocene, younger than
2231:
conjectured that it probably used a series of well-targeted repetitive strikes with the beak in an "attack-and-retreat" strategy. Struggling prey could also have been restrained with the feet, despite the lack of sharp talons.
990:
in the family Cariamidae. Although phorusrhacids are the most taxon-rich group within Cariamiformes, their interrelationships are unclear due to the incompleteness of their remains. A lineage of related predatory birds, the
463:
is known from the Pliocene deposits of Florida, southern California, and southeastern Texas, regions that had large open savannas and a menagerie of mammalian megafauna. It likely preyed on mammals such as the extinct
1942:
is distinguished from other phorusrhacines by the anatomy of its tarsometatarsus; the distal end of the mid-trochlea is spread out onto its sides and its slenderness compared to related genera of the same size. The
2281:
is known are all tropical or subtropical in climate, with traditional interpretations indicating a habitat of dense forests and a variety of flora. In Inglis 1a specifically, previous studies have reported that
384:(toe bone), but comes from one of the largest phorusrhacid individuals known. In the years following the description, many more isolated elements have been unearthed from sites from other areas of Florida,
5609:
3426:
Chandler, Robert; Jefferson, George; Lindsay, Lowell; Vescera, Susan (2013). "The terror bird, Titanis (Phorusrhacidae), from Pliocene Olla Formation, Anza-Borrego Desert State Park, southern California".
2511:
and Pliocene, though most species crossed at around 2.7 million years ago. The momentous final stage witnessed the movement of glyptodonts, capybaras, pampatheres, and marsupials to North America via the
2516:, which connected South America to the rest of the Americas, and a reverse migration of ungulates, proboscideans, felids, canids, and many other mammal groups to South America. The oldest fossil of
1891:, an Argentine phorusrhacid. The pterygoid is enlarged, as seen in other phorusrhacids, at 10 centimeters (3.9 in) in complete length with a medially placed joint for its articulation to the
3772:"Osteology and phylogenetic affinities of the middle Eocene North American Bathornis grallator—one of the best represented, albeit least known Paleogene cariamiform birds (seriemas and allies)"
459:
show that large phorusrhacids had very stiff and stress-resistant skulls; this indicates they may have swallowed small prey whole or targeted larger prey with repetitive strikes of the beak.
3041:
4710:
Kay, R. F.; Vizcaino, S. F.; Bargo, M. S. (2012). "A review of the paleoenvironment and paleoecology of the Miocene Santa Cruz Formation". In Vizcaino, S.F.; Kay, R.F.; Bargo, M.S. (eds.).
2428:
Along with mammals, a menagerie of reptiles including lizards, turtles, and snakes is known from fossils. There are abundant remains of avifauna, with thousands of known fossils, including
449:
co-existed with many placental predators in North America and was likely one of several apex predators in its ecosystem. The tarsometatarsus was long and slender, like that of its relative
2524:
was able to traverse the gap to North America is unknown. A hypothesis made by a 2006 article suggested that it could have island-hopped through Central America and the Caribbean islands.
595:(toe bone), deposited under specimen numbers UF 4108 and 4109 respectively. They remained without analysis in the museum's donations until they were recognized as unique by paleontologist
934:, the authors citing the bone's age and phorusrhacid features. The age of the Anza-Borrego premaxilla is estimated at 3.7 million years old, making it the oldest confirmed fossil of
4653:
Avian Paleontology at the Close of the 20th Century: Proceedings of the 4th International Meeting of the Society of Avian Paleontology and Evolution, Washington, D.C, 4–7 June 1996
4627:
2055:
could have been adaptations to enable the birds to search for and take smaller animals in tall plant growth or broken terrain. The large expansions above the eyes formed by the
411:
had elongated hind limbs, a thin pelvis, proportionally small wings, and a large skull with a hooked beak. It was one of the largest phorusrhacids, possibly similar in size to
4044:
2637:
2125:, and that while there were other large predators in South America at the time, they were limited in numbers and not as fast and agile as the phorusrhacids, and the many
4860:
Morgan, G. S., & Hulbert Jr, R. C. (1995). "Overview of the geology and vertebrate biochronology of the Leisey Shell Pit local fauna, Hillsborough County, Florida".
2047:
studies. Detailed analyses of their running and predatory adaptations were only conducted from the beginning of the 21st century through the use of computer technology.
6378:
4454:
2520:
is estimated to be 5 million years old, at least half a million years older than the earliest date for the Isthmus's formation about 4.5–3.5 million years ago. How
2980:
2874:
2825:
5601:
2273:
mammals as well as new immigrants from Asia and South America. Because of this, the fauna of the Blancan starkly contrasted with the fauna of the Pleistocene and
2063:) would have protected the eyes against the sun, and enabled keen eyesight, which indicates they hunted by sight in open, sunlit areas, and not shaded forests.
1110:
the Argentinian paleontologist Federico J. Degrange and colleagues performed a phylogenetic analysis of Phorusrhacidae, wherein they found Phorusrhacinae to be
2075:(shin bone) of phorusrhacids to determine their speed, but conceded that such estimates can be unreliable even for extant animals. The tibiotarsal strength of
4891:
6457:
3582:
3279:
3165:
2797:
732:
5027:
2243:, finding the neck to be divided into three sections. By manually manipulating the vertebrae, they concluded that the neck musculature and skeleton of
1938:
and other phorusrhacines were heavily built. They all preserve an elongated, thin tarsometatarsus that was at least 60% the length of the tibiotarsus.
2904:
5364:
5278:
4839:
6452:
6365:
3011:
5664:
4780:
736:
4989:
4675:
Morgan, Gary S.; Emslie, Steven D. (2010). "Tropical and western influences in vertebrate faunas from the Pliocene and Pleistocene of Florida".
3395:
894:
fossil at 5 million years old, compared to the Floridan fossils which are around 2.2–1.8 million years old, and therefore from the Blancan age.
6467:
6462:
6447:
2561:) carnivores that occupied the same ancient terrestrial ecosystems during the Great American Interchange. However, this has been contested as
5496:
4727:
3095:
2214:. These researchers interpreted this loss as an adaptation for enhanced rigidity of the skull; compared to the modern red-legged seriema and
951:
822:
6287:
1799:. Accurate scaling after the discovery of new material estimated its total height around 1.4 to 2 meters (4.6 to 6.6 ft) tall. Though
995:, occupied North America before the arrival of phorusrhacids, living from the Eocene to Miocene and filling a similar niche to cariamids.
158:
5211:
4617:
4136:
1771:
with long hind limbs, narrow pelvises, and proportionally small wings. They had elongated skulls ending in a thin, hooked beak. Overall,
3952:"Understanding specifics in generalist diets of carnivorans by analyzing stable carbon isotope values in Pleistocene mammals of Florida"
770:
4332:
2721:
4928:
3078:
Alvarenga, Herculano; Chiappe, Luis; Bertelli, Sara (2011). "Phorusrhacids: The Terror Birds". In Dyke, Gareth; Kaiser, Gary (eds.).
6432:
5080:
1895:. Two quadratojugals are preserved, both with different anatomies. The larger of the two has a more pronounced crest cranial to the
568:
167:
4186:"A new Mesembriornithinae (Aves, Phorusrhacidae) provides new insights into the phylogeny and sensory capabilities of terror birds"
4021:
930:
This was supported by later studies, but a 2013 paper by paleontologist Robert Chandler and colleagues assigned the premaxilla to
5449:
4159:
Reappraisal on the phylogenetic relationships of the enigmatic flightless bird (Brontornis burmeisteri) Moreno and Mercerat, 1891.
1924:
2537:, climate change, and other factors likely led to the extinction of most of the remaining native South American mammal families.
3885:"The youngest large carnassial bird (Phorusrhacidae, Phorusrhacinae) from South America (Pliocene-Early Pleistocene of Uruguay)"
2569:
as being from the latest Pleistocene, an error followed by later studies, postulated that it went extinct as recently as 15,000
2565:
had competed successfully against both groups for several million years upon entering North America. Brodkorb's description of
2026:
Features such as the pointed premaxillary beak tip and recurved pedal unguals are direct evidence of its carnivorous lifestyle.
3995:
3242:
Noll, Steven, and David Tegeder. (2009). Ditch of Dreams: The Cross Florida Barge Canal and the Struggle for Florida’s Future.
2614:
2549:
and other phorusrhacids throughout the Americas was originally theorized to have been due to competition with large placental (
2129:
mammals would have provided ample prey. Chiappe remarked that phorusrhacids crudely resembled earlier predatory dinosaurs like
901:, G. Davidson Woodward acquired several avian fossils from sediments in the Pliocene-aged (3.7 million year old) strata of the
496:
is unique among phorusrhacids in that it is the only one known from North America, crossing over from South America during the
1014:(when the continent was an isolated island) and survived until the Pleistocene, eventually spreading to North America through
6472:
906:
551:
fossils occurred in the winter of 1961/1962, when amateur archaeologists Benjamin Waller and Robert Allen were searching for
392:. The species was classified in the subfamily Phorusrhacinae, which includes some of the last and largest phorusrhacids like
641:, an error which made it to the final publication. In that publication, Brodkorb erroneously classified it as a relative of
3771:
3454:
5106:
3678:
1807:
based on comparing the dimensions of known specimens, researchers weren't able to definitively estimate the body mass of
2965:
2866:
2822:
2299:
959:
5657:
3307:
1062:
1985:
The wings are small and could not have been used for flight, but were much more strongly built than those of living
4879:
3221:
2534:
2464:
2454:
2079:
and an indeterminate large phorusrhacine suggested a speed of 14 m/s (50 km/h; 31 mph), and that of
1679:
1095:
of Phorusrhacidae in 2011 that did not separate Brontornithinae, Phorusrhacinae, and Patagornithinae, resulting in
866:
497:
5166:"The Evolution of the Cenozoic Terrestrial Mammalian Predator Guild in South America: Competition or Replacement?"
4184:
Degrange, Federico J.; Tambussi, Claudia P.; Taglioretti, Matías L.; Dondas, Alejandro; Scaglia, Fernando (2015).
3928:
3539:
2459:
6477:
4091:
Jones, Washington; Rinderknecht, Andrés; Alvarenga, Herculano; Montenegro, Felipe; Ubilla, Martín (1 June 2018).
2135:, in having gigantic heads, very small forelimbs, and very long legs, and thereby similar carnivore adaptations.
712:
560:
3562:
3271:
2210:(mobility of skull bones in relation to each other), as was also the case for other large phorusrhacids such as
1783:, its closest relatives. Little is known of its body structure, but it seems to have been less wide-footed than
179:
4953:"A new Sylvilagus (Mammalia: Lagomorpha) from the Blancan (Pliocene) and Irvingtonian (Pleistocene) of Florida"
3668:"A review of the Bathornithidae (Aves, Gruiformes), with remarks on the relationships of the suborder Cariamae"
2764:
1966:
have been collected. The cervical vertebrae are elongated anteroposteriorly and somewhat flexible, whereas the
1874:
1585:
716:
564:
556:
355:
5122:
3012:"Revised age of the late Neogene terror bird (Titanis) in North America during the Great American Interchange"
2002:, with large tubercles called quill knobs present on their ulnae. These quill knobs would have supported long
6442:
5024:
2475:
South America, the continent where phorusrhacids originated, was isolated after the breakup of the landmass
2207:
2191:
1892:
1602:
708:
666:
2939:
6318:
5650:
2335:
sites preserve over a hundred species and many different mammals. This includes extinct proboscideans and
731:
during the Pliocene, but became a sedimentary layer of clay that was uncovered during construction of the
704:
552:
453:
which has been suggested to have been agile and capable of running at high speeds. Studies of the related
4426:
1877:. Sides of the fossil are flat bearing a large dorsal crest, as in other thin-skulled phorusrhacids like
857:
was described in 1995; an isolated pedal phalanx that had been recovered from a sand and gravel pit near
6404:
5388:"North American Glyptodontines (Xenarthra, Mammalia) in the Upper Pleistocene of northern South America"
2325:
1092:
740:
5299:
McDonald, H. G. (2005). "Palecology of extinct xenarthrans and the Great American Biotic Interchange."
4359:
Degrange, Federico J.; Tambussi, Claudia P.; Moreno, Karen; Witmer, Lawrence M.; Wroe, Stephen (2010).
2148:
1025:
predators (which disappeared in the Pliocene), and it is possible that they competed ecologically with
354:. The first fossils were unearthed by amateur archaeologists Benjamin Waller and Robert Allen from the
5318:
5234:
4803:
6437:
6298:
5476:
5399:
5330:
5246:
4965:
4952:
4815:
4756:
4684:
4513:
4376:
4197:
4104:
3963:
3896:
3783:
3716:
3624:
3379:
3363:
3025:
2307:
2093:
1913:
1619:
281:
6247:
5025:"Tropical and western influences in vertebrate faunas from the Pliocene and Pleistocene of Florida."
4804:"A global synthesis of the marine and terrestrial evidence for glaciation during the Pliocene Epoch"
4712:
Early Miocene Paleobiology in Patagonia (High-Latitude Paleocommunities of the Santa Cruz Formation)
4068:
Emslie, S. D. (1995). "The fossil record of Arctodus pristinus (Ursidae: Tremarctinae) in Florida".
902:
5636:
5553:"The Great American Biotic Interchange: Dispersals, Tectonics, Climate, Sea Level and Holding Pens"
5471:
Cione, Alberto; Gasparini, Germán; Soibelzon, Esteban; Leopoldo, Soibelzon; Eduardo, Tonni (2015).
2126:
1978:
were more boxy and rigid. The dorsal vertebrae have tall neural spines atop the centra. The dorsal
1506:
1088:
646:
32:
5932:
3194:"Avian community, climate, and sea-level changes in the Plio-Pleistocene of the Florida Peninsula"
2235:
A 2012 follow-up study by Claudia Tambussi and colleagues analyzed the flexibility of the neck of
1076:, however, has consistently been regarded as being within the subfamily Phorusrhacinae along with
6217:
6009:
5939:
5879:
5782:
5510:
5441:
5415:
5203:
5134:
4598:
4324:
4223:
4128:
4093:"The last terror birds (Aves, Phorusrhacidae): new evidence from the late Pleistocene of Uruguay"
3987:
3920:
3807:
3648:
3531:
3213:
2931:
2789:
2347:
2248:
group, derived from a seriema-like ancestor. These were the "Psilopterine Skull Type", which was
2215:
2177:
2173:
1967:
1857:
1459:
1149:
1003:
875:
749:
596:
174:
6293:
6031:
5999:
5953:
5792:
5760:
4427:"On the Extinct Birds of Patagonia .–I. The Skull and Skeleton of Phororhacos inflatus Ameghino"
2528:
is possibly not the only large animal to have done this; two genera of large ground sloth and a
2018:
due to a scarcity of fossil remains. Many of its habits are inferred based on related taxa like
422:(14 in) and 56 centimeters (22 in) in length, one of the largest known from any bird.
6409:
6075:
5925:
5911:
6391:
6383:
5817:
5642:
5582:
5502:
5492:
5433:
5356:
5270:
5262:
5195:
5126:
5072:
4981:
4831:
4772:
4723:
4590:
4541:
4496:
Tambussi, Claudia P.; de Mendoza, Ricardo; Degrange, Federico J.; Picasso, Mariana B. (2012).
4446:
4404:
4316:
4277:
4120:
3979:
3912:
3799:
3752:
3734:
3640:
3523:
3091:
3016:
2513:
2363:
1904:
1636:
1530:
998:
923:
898:
887:
6396:
6020:
5962:
3153:
1068:
Though for many decades the internal phylogenetics of Phorusrhacidae were uncertain and many
645:, though Ray pushed Brodkorb to assign the fossils to Phorusrhacidae. Brodkorb published his
6083:
5572:
5564:
5484:
5423:
5407:
5346:
5338:
5254:
5185:
5177:
5118:
5064:
4973:
4920:
4823:
4764:
4715:
4692:
4657:
4580:
4531:
4521:
4438:
4394:
4384:
4308:
4267:
4259:
4213:
4205:
4112:
4036:
3971:
3904:
3863:
3791:
3742:
3724:
3632:
3574:
3515:
3387:
3323:
3205:
3131:
3083:
3033:
2923:
2781:
2713:
2694:
2629:
2397:
2321:
2180:), and hypothetical up and downwards range of movement of the neck in the same genus (right)
1829:
1768:
1653:
1045:
757:
4480:(Doctoral thesis) (in Spanish). Facultad de Ciencias, Universidad de la República, Uruguay.
4296:
6150:
6046:
5031:
4914:
4802:
De Schepper, Stijn; Gibbard, Philip L.; Salzmann, Ulrich; Ehlers, Jürgen (1 August 2014).
4651:
4022:"A new species of Hemiauchenia (Artiodactyla, Camelidae) from the Late Blancan of Florida"
3486:
2829:
2433:
2157:
2110:
1994:
the digits could flex to some degree. Evidence of elongated quill-feathers are known from
1952:
1900:
1896:
1825:
914:
753:
631:
588:
534:
377:
369:
323:
277:
5602:"The Last Terror Birds: A review of Phorusrhacids and their Plio-Pleistocene occurrences"
3703:
Angst, Delphine; Buffetaut, Eric; Lécuyer, Christophe; Amiot, Romain (27 November 2013).
727:
including vertebrae, limb bones, and even parts of the skull. Inglis 1b was originally a
5480:
5403:
5334:
5250:
4969:
4819:
4760:
4688:
4517:
4380:
4201:
4108:
3967:
3900:
3787:
3720:
3705:"'Terror Birds' (Phorusrhacidae) from the Eocene of Europe Imply Trans-Tethys Dispersal"
3628:
3383:
3029:
3010:
MacFadden, Bruce J.; Labs-Hochstein, Joann; Hulbert, Richard C.; Baskin, Jon A. (2007).
6106:
6058:
5840:
5577:
5552:
4536:
4497:
4442:
4399:
4360:
4272:
3747:
3704:
2570:
2489:
2370:
2252:(more similar to the ancestral type), and the "Terror Bird Skull Type", which included
2240:
2039:
2003:
1853:
1845:
1439:
1136:
992:
979:
971:
967:
674:
604:
489:
430:
331:
257:
244:
5258:
522:
6426:
6356:
6263:
6233:
6187:
6159:
5989:
5902:
5888:
5750:
5726:
5711:
5674:
5529:
5514:
5445:
5317:
Scillato-Yané, G. J.; Carlini, A. A.; Tonni, E. P.; Noriega, J. I. (1 October 2005).
5207:
5138:
4185:
4132:
3652:
3612:
3154:"The squamate reptiles of the Inglis 1A fauna (Irvingtonian: Citrus County, Florida)"
3119:
2935:
2772:
2497:
2442:
2336:
2283:
2249:
2168:
2131:
2071:
In 2005, Rudemar Ernesto Blanco and Washington W. Jones examined the strength of the
2056:
1944:
1849:
1474:
1363:
1228:
1171:
1022:
983:
975:
700:
635:
584:
538:
476:
455:
343:
231:
109:
4827:
4602:
4478:
Fororrácidos (Aves, Phorusrhacidae) basados en el análisis de estructuras biológicas
4328:
4227:
3991:
3868:
3851:
3811:
6166:
6129:
6091:
5856:
5012:
The squamate reptiles of the Inglis IA fauna (Irvingtonian: Citrus County, Florida)
4977:
4248:"Terror birds on the run: a mechanical model to estimate its maximum running speed"
4247:
3908:
3391:
2927:
2429:
2389:
2381:
2312:
2290:
2166:
Stress distribution in bird skulls during various movements, including the related
2044:
1841:
1245:
1211:
1111:
862:
683:
608:
592:
413:
381:
289:
3636:
603:
features and giant size of the fossils, which led him to believe they were from a
5342:
4719:
4696:
4526:
4389:
4209:
3729:
1061:. All of these genera, including the last phorusrhacids, went extinct during the
6350:
6226:
6203:
6115:
5802:
5705:
5475:. SpringerBriefs in Earth System Sciences (1st ed.). London: SpringerLink.
3446:
2529:
2493:
2374:
2106:
2097:
2072:
1796:
1286:
1105:
1019:
883:
858:
689:
576:
394:
351:
84:
65:
61:
3667:
567:
in Florida, United States. The two collectors donated their discoveries to the
513:
17:
6196:
6173:
6067:
5973:
5826:
5771:
5626:
5568:
5488:
5181:
4116:
3087:
2966:"Nannippus phlegon (Mammalia, Equidae) from the Pliocene (Blancan) of Florida"
2501:
2437:
2417:
2359:
2199:
2102:
2035:
1886:
1787:, with a proportionally much stronger middle toe. In its initial description,
1329:
1194:
910:
699:
has been found in five locales in Florida: Santa Fe River sites 1a and 1b and
642:
619:
442:
426:
389:
129:
94:
6341:
5506:
5437:
5419:
5360:
5266:
5199:
5130:
5076:
4985:
4924:
4835:
4776:
4661:
4656:. Smithsonian Contributions to Paleobiology. Vol. 89. pp. 185–198.
4450:
4320:
4312:
4158:
4124:
3983:
3916:
3803:
3738:
3644:
3527:
2903:
MacFadden, B.; Labs-Hochstein, J.; Hulbert Jr., R. C.; Baskin, J. A. (2006).
6256:
5849:
5165:
5068:
4744:
4092:
4040:
3327:
3135:
2717:
2633:
2508:
2409:
2355:
2286:
2122:
2085:
1346:
1051:
1034:
1033:
itself coexisted with a variety of placental mammalian predators, including
1026:
1011:
963:
918:
613:
607:(or "terror bird", a group of large, predatory birds). Ray also noted their
470:
465:
438:
191:
134:
78:
5586:
5274:
5164:
Prevosti, Francisco J.; Forasiepi, Analía; Zimicz, Natalia (1 March 2013).
4594:
4545:
4408:
4281:
4263:
3756:
3331:
2492:, and equids populating the region alongside now extinct families like the
441:
mammalian predators, though they did co-exist with some large, carnivorous
2202:
and stress distribution in its skull. They found its bite force to be 133
6335:
6122:
5918:
5864:
5693:
4768:
3368:(Aves: Phorusrhacidae) from the Pleistocene coastal plain of South Texas"
2480:
2476:
2405:
2274:
2270:
2195:
2186:
A 2010 study by Degrange and colleagues of the medium-sized phorusrhacid
1990:
1979:
1975:
1963:
1955:
1928:
1908:
1303:
1100:
1057:
1039:
987:
947:
728:
580:
531:
434:
400:
373:
347:
211:
124:
119:
104:
99:
89:
57:
5325:. Quaternary Paleontology and biostratigraphy of southern South Africa.
5319:"Paleobiogeography of the late Pleistocene pampatheres of South America"
5052:
3795:
3613:"A revision of skull morphology in Phorusrhacidae (Aves, Cariamiformes)"
3578:
3217:
3082:(1st ed.). Hoboken, New Jersey: Wiley-Blackwell. pp. 187–208.
6370:
5982:
5428:
5411:
5351:
4585:
4560:
4218:
3924:
3884:
3535:
3503:
3193:
2793:
2554:
2550:
2421:
2351:
2303:
2203:
1792:
955:
693:. This was the first discovery of phorusrhacids outside South America.
638:
624:
572:
485:
481:
359:
335:
139:
114:
69:
39:
5386:
Carlini, Alfredo A.; Zurita, Alfredo E.; Aguilera, Orangel A. (2008).
5190:
4361:"Mechanical analysis of feeding behavior in the extinct 'terror bird'
3037:
1816:
one of the largest phorusrhacids and birds known, only relatives like
833:
5687:
5387:
3209:
2401:
2052:
1986:
1971:
1948:
1084:
962:, and some bird groups around the world developed a tendency towards
662:
319:
201:
6312:
3519:
2785:
681:
with the subfamily Phorusrhacinae within Phorusrhacidae, along with
611:
origin; they were found in a sedimentary layer containing the equid
5473:
The Great American Biotic Interchange: A South American Perspective
2380:
One of the largest groups known from the Blancan of Florida is the
1010:
The oldest phorusrhacid fossils come from South America during the
839:
5699:
3975:
2458:
2413:
2393:
2340:
2089:
2060:
1947:
is large and had three digits, the third of which had an enlarged
1923:
1072:
were named, they have received more analysis in the 21st century.
997:
909:, California, including a wing bone found in association with the
654:
385:
327:
4743:
Robinson, Marci M.; Dowsett, Harry J.; Chandler, Mark A. (2008).
630:
Ray presented the Santa Fe fossils to the museum's ornithologist
3951:
3480:
A new genus for the incredible teratorn (Aves: Teratornithidae).
2558:
2485:
2034:
Phorusrhacids are thought to have been terrestrial predators or
1882:
1069:
600:
376:
material is fragmentary, consisting of only an incomplete right
339:
221:
6316:
5724:
5646:
5107:"The Great American Biotic Interchange: Patterns and Processes"
3852:"Systematic revision of the Phorusrhacidae (Aves: Ralliformes)"
2615:"An Idiosyncratic History of Floridian Vertebrate Paleontology"
4622:
1982:
connected to the sacral ribs, creating a basketed underbelly.
1885:(upper arc) of the exposed premaxilla is identical to that in
1029:
predators that entered from North America in the Pleistocene.
587:. Waller and Allen's avian fossils consisted of only a distal
5233:
Blondel, Jacques; Mourer-Chauviré, Cécile (1 December 1998).
3478:
Campbell Jr, K. E., Scott, E., & Springer, K. B. (1999).
2316:
was discovered also consisted of a variety of habitats, with
623:, indicating that they originated from the upper part of the
3845:
3843:
3841:
3839:
3837:
3835:
3833:
2823:
Turtles of the Early Pleistocene Santa Fe River 1B Locality.
1117:
5534:
Gulf Coast Association of Geological Societies Transactions
5235:"Evolution and history of the western Palaearctic avifauna"
4559:
Hudson, Penny E.; Corr, Sandra A.; Wilson, Alan M. (2012).
2973:
Bulletin of the Florida State Museum of Biological Sciences
425:
Phorusrhacids are thought to have been ground predators or
334:("terror birds", a group originating in South America), an
5053:"Size and Locomotion in Teratorns (Aves: Teratornithidae)"
4880:"Saber-Toothed Cats from the Plio-Pleistocene of Nebraska"
2206:
at the bill tip, and showed it had lost a large degree of
1907:
has been suggested due to the lack of signs of unfinished
986:, the only living members of which are the two species of
417:
based on preserved material. More recent estimates placed
5123:
10.3417/0026-6493(2006)93[245:TGABIP]2.0.CO;2
3883:
Tambussi, Claudia; Ubilla, Martín; Perea, Daniel (1999).
2765:"A giant flightless bird from the Pleistocene of Florida"
5051:
Campbell, Kenneth E.; Tonni, Eduardo P. (1 April 1983).
3312:(Aves: Phorusrhacidae) from the Late Blancan of Florida"
2369:
Armadillos and their relatives are also known such as a
4916:
Vertebrate fossils from the Blanco local fauna of Texas
4498:"Flexibility along the neck of the Neogene terror bird
4252:
Proceedings of the Royal Society B: Biological Sciences
739:
during the 1960s. A pair of graduate students from the
4878:
Martin, Larry; Schultz, C. B.; Schultz, M. R. (1988).
2573:(about 13,000 BC). The rare-earth element analysis of
2507:
The Great American Interchange took place between the
1006:, one of the closest living relatives of phorusrhacids
795:
4246:
Blanco, Rudemar Ernesto; Jones, Washington W (2005).
2441:, one of the largest flight-capable birds known, and
537:(UF 4108, left) in anterior and posterior views, and
6244:
6214:
6184:
6147:
6103:
6055:
6043:
6027:
6016:
6005:
5995:
5950:
5899:
5876:
5837:
5814:
5798:
5788:
5778:
5767:
5756:
5746:
4431:
The Transactions of the Zoological Society of London
3606:
3604:
3602:
3600:
922:
at that time, an assessment backed by ornithologist
296:
6325:
6243:
6213:
6183:
6146:
6102:
6054:
6042:
5972:
5949:
5898:
5875:
5836:
5813:
5737:
4745:"Pliocene Role in Assessing Future Climate Impacts"
4618:"Huge 'terror bird' fossil discovered in Patagonia"
4295:Deeming, D. Charles; Birchard, Geoffrey F. (2009).
3950:Feranec, Robert S.; DeSantis, Larisa R. G. (2014).
2909:) from Florida and Texas using rare earth elements"
2088:of medium-sized mammals, the size for example of a
913:of a giant bird. The wing bone was referred to the
4951:
3120:"The Great American Biotic Interchange in Florida"
3073:
3071:
3069:
3067:
3065:
3063:
3061:
3059:
3005:
3003:
3001:
2898:
2896:
2894:
2892:
5301:Bulletin of the Florida Museum of Natural History
4862:Bulletin of the Florida Museum of Natural History
4070:Bulletin of the Florida Museum of Natural History
4029:Bulletin of the Florida Museum of Natural History
3316:Bulletin of the Florida Museum of Natural History
3124:Bulletin of the Florida Museum of Natural History
2706:Bulletin of the Florida Museum of Natural History
2622:Bulletin of the Florida Museum of Natural History
2320:suggested to live in open grasslands. During the
1791:has been suggested to be larger than the African
5530:"South Texas and the Great American Interchange"
4884:Transactions of the Nebraska Academy of Sciences
4714:. Cambridge University Press. pp. 331–365.
2096:. This strength could be used for accessing the
579:, and many other Floridan fossils from the late
4569:): spatio-temporal and kinetic characteristics"
3301:
3299:
3297:
1899:, whereas the smaller quadratojugal has a deep
1795:and more than twice the size of South American
886:stage, a period preceding the formation of the
372:in 1963, the species name honoring Waller. The
4491:
4489:
4487:
2905:"Refined age of the late Neogene terror bird (
2821:Parmley, D., Chandler, R., & Chandler, L.
2758:
2756:
2754:
2752:
2750:
2748:
2746:
2744:
2742:
890:. This would make it the oldest estimate of a
878:within the fossil demonstrated that the Texan
673:, honors Waller, one of the collectors of the
634:, who mistakenly believed that they were from
5658:
4749:Eos, Transactions, American Geophysical Union
4354:
4352:
4350:
3357:
3355:
3353:
3351:
3349:
8:
2688:
2686:
2684:
2682:
2680:
2678:
2051:narrowing of the pelvis, upper maxilla, and
982:. Phorusrhacids are an extinct group within
346:that inhabited the United States during the
5023:Morgan, G. S., & Emslie, S. D. (2010).
4297:"Why Were Extinct Gigantic Birds So Small?"
4179:
4177:
4175:
2676:
2674:
2672:
2670:
2668:
2666:
2664:
2662:
2660:
2658:
2463:Examples of fauna that participated in the
2339:represented by grazing equids and browsing
2113:, an Argentine paleontologist, stated that
1103:(topology 1). In their 2015 description of
869:, Texas. This was the first description of
6313:
6099:
6051:
5734:
5721:
5665:
5651:
5643:
4919:. Lubbock: Museum, Texas Tech University.
3611:Degrange, Federico J. (10 December 2020).
2582:, and close to the time of human arrival.
2014:Little is known about the paleobiology of
938:, though the Texan specimen may be older.
649:in 1963, naming the new genus and species
157:
47:
5576:
5427:
5350:
5189:
4584:
4535:
4525:
4398:
4388:
4271:
4217:
3867:
3850:Alvarenga, H. M. F.; Höfling, E. (2003).
3746:
3728:
3490:Smithsonian Contributions to Paleobiology
2172:(left, A-C, the other skulls belong to a
2059:bones (similar to what is seen in modern
1958:. The spinal column is poorly known from
1916:ending in a sharp tip pointing downward.
1803:is suggested to be comparable in size to
1114:, or an unnatural grouping (topology 2).
5323:Journal of South American Earth Sciences
4241:
4239:
4237:
3451:Anza-Borrego Desert Paleontology Society
3244:University Press of Florida, Gainesville
2693:Gould, G. C. & Quitmyer, I. (2005).
677:. As suggested by Ray, Brodkorb grouped
665:, due to the bird's large size, and the
5111:Annals of the Missouri Botanical Garden
2590:
2412:. Many fossils of smaller mammals like
2331:The Blancan age strata of Florida from
1775:was very similar to the South American
813:
31:For the Greek mythological figure, see
5100:
5098:
4561:"High speed galloping in the cheetah (
4086:
4084:
4082:
3266:
3264:
3262:
3260:
3258:
3256:
3254:
3252:
3187:
3185:
3183:
3147:
3145:
804:
5528:Baskin, J. A.; Thomas, R. G. (2007).
4420:
4418:
4015:
4013:
3931:from the original on 14 February 2023
3563:"Flights of Fancy in Avian Evolution"
3542:from the original on 14 February 2023
3474:
3472:
3421:
3419:
3417:
3415:
3413:
3113:
3111:
3109:
3107:
2803:from the original on 21 December 2014
2727:from the original on 15 December 2012
2043:than through detailed hypotheses and
952:extinction of the non-avian dinosaurs
7:
5452:from the original on 29 October 2023
5367:from the original on 29 October 2023
5281:from the original on 29 October 2023
5214:from the original on 29 October 2023
5145:from the original on 29 October 2023
5083:from the original on 29 October 2023
4842:from the original on 29 October 2023
4783:from the original on 29 October 2023
4457:from the original on 29 October 2023
4335:from the original on 2 February 2023
3998:from the original on 29 October 2023
3818:from the original on 29 October 2023
3168:from the original on 29 October 2023
3158:Bulletin of the Florida State Museum
2861:
2859:
2857:
2855:
2853:
2851:
2849:
2847:
2845:
2608:
2606:
2604:
2602:
2600:
2598:
2596:
2594:
2467:, with South American migrants like
2322:Miocene-Pliocene climatic transition
786:
777:
555:and fossils using scuba gear in the
5612:from the original on 30 August 2023
1840:Of the skull, only the premaxilla,
1577:
1570:
1546:
1522:
1498:
1452:
1445:
1435:
1278:
1186:
1164:
1142:
1132:
882:derived from Pliocene rocks of the
627:stage (2.2–1.8 million years old).
6458:Pleistocene birds of North America
4958:Journal of Vertebrate Paleontology
4443:10.1111/j.1096-3642.1899.tb00019.x
4190:Journal of Vertebrate Paleontology
3889:Journal of Vertebrate Paleontology
3617:Journal of Vertebrate Paleontology
3561:Ksepka, Daniel (6 February 2017).
3372:Journal of Vertebrate Paleontology
2986:from the original on 10 March 2022
2916:Journal of Vertebrate Paleontology
719:. Of the 40 Floridan specimens of
25:
5600:Thomsen, Søren Bay Kruse (2022).
5239:Trends in Ecology & Evolution
5105:David Webb, S. (23 August 2006).
4913:Dalquest, Walter Woelber (1975).
4894:from the original on 31 July 2023
4139:from the original on 14 July 2020
3684:from the original on 31 July 2023
3398:from the original on 20 June 2023
3044:from the original on 20 June 2023
2877:from the original on 10 June 2020
2643:from the original on 20 June 2023
2038:, and have often been considered
849:Texan and Californian discoveries
569:Florida Museum of Natural History
492:, and other Pliocene herbivores.
429:, and have often been considered
168:Florida Museum of Natural History
6297:
6292:
6286:
5629:
4992:from the original on 13 May 2023
4931:from the original on 13 May 2023
4630:from the original on 27 May 2022
4050:from the original on 14 May 2023
3457:from the original on 11 May 2023
3282:from the original on 11 May 2023
3224:from the original on 11 May 2023
2535:Human settlement in the Americas
2424:have been found associated with
2227:did target large prey, Degrange
2156:
2147:
2121:, would have been as quick as a
1934:As for the postcranial anatomy,
838:
832:
812:
803:
794:
785:
776:
769:
521:
512:
437:South America in the absence of
178:
166:Reconstructed Titanis skeleton,
6453:Pliocene birds of North America
4950:White, John A. (20 June 1991).
4828:10.1016/j.earscirev.2014.04.003
4573:Journal of Experimental Biology
3869:10.1590/S0031-10492003000400001
3585:from the original on 7 May 2018
3504:"The Incredible Teratorn Again"
2239:based on the morphology of its
571:(UF) later along with bones of
5557:Journal of Mammalian Evolution
5170:Journal of Mammalian Evolution
4978:10.1080/02724634.1991.10011391
3909:10.1080/02724634.1999.10011154
3392:10.1080/02724634.1995.10011266
2928:10.1080/02724634.2006.10010069
1903:instead of a crest. Potential
907:Anza-Borrego Desert State Park
1:
6468:Taxa named by Pierce Brodkorb
6463:Fossil taxa described in 1963
6448:Pleistocene genus extinctions
5259:10.1016/S0169-5347(98)01461-X
4365:(Gruiformes: Phorusrhacidae)"
3637:10.1080/02724634.2020.1848855
2384:represented by three families
2101:well-armored mammals such as
5392:Paläontologische Zeitschrift
5343:10.1016/j.jsames.2005.06.012
4720:10.1017/CBO9780511667381.018
4697:10.1016/j.quaint.2009.11.030
4565:) and the racing greyhound (
4527:10.1371/journal.pone.0037701
4390:10.1371/journal.pone.0011856
4210:10.1080/02724634.2014.912656
3730:10.1371/journal.pone.0080357
2484:groups like canids, felids,
1063:Late Pleistocene extinctions
960:evolutionary diversification
5551:Woodburne, Michael (2010).
4616:Joyce, Christopher (2006).
3502:Howard, Hildegarde (1972).
3364:"The giant flightless bird
1091:and colleagues published a
1055:, and the short-faced bear
1037:like the saber-toothed cat
338:family of large, predatory
6494:
4476:Jones, Washington (2010).
3856:Papéis Avulsos de Zoologia
3276:Florida Vertebrate Fossils
2871:Florida Vertebrate Fossils
2465:Great American Interchange
2455:Great American Interchange
2452:
2449:Great American Interchange
2277:. The localities in which
2265:During the Blancan stage,
2109:. In a 2006 news article,
1767:Phorusrhacids were large,
1680:Paraphysornis brasiliensis
547:The earliest discovery of
498:Great American Interchange
29:
6283:
5733:
5720:
5682:
5569:10.1007/s10914-010-9144-8
5489:10.1007/978-94-017-9792-4
5182:10.1007/s10914-011-9175-9
4117:10.1007/s12542-017-0388-y
3675:American Museum Novitates
3447:"Titanis in Anza-Borrego"
3198:Ornithological Monographs
3088:10.1002/9781119990475.ch7
2964:MacFadden, Bruce (1980).
2763:Brodkorb, Pierce (1963).
1730:
1676:
1650:
1633:
1616:
1599:
1582:
1575:
1568:
1551:
1544:
1527:
1520:
1503:
1496:
1472:
1457:
1450:
1443:
1396:
1360:
1343:
1326:
1300:
1283:
1276:
1259:
1242:
1225:
1208:
1191:
1184:
1169:
1162:
1147:
1140:
733:Cross Florida Barge Canal
318:(meaning "Titan" for the
295:
288:
175:Scientific classification
173:
165:
156:
50:
6433:Extinct flightless birds
5677:and their extinct allies
5035:Quaternary international
5014:. University of Florida.
4925:10.5962/bhl.title.142927
4677:Quaternary International
4662:10.5479/si.00810266.89.1
4313:10.3184/175815508X402482
4157:Agnolin, F. L. (2021). "
2388:The carnivorans include
1586:Phorusrhacos longissimus
617:and "bone-crushing" dog
599:in 1962. He noticed the
407:Like all phorusrhacids,
38:Not to be confused with
4500:Andalgalornis steulleti
4425:Andrews, C. W. (1899).
4363:Andalgalornis steulleti
4041:10.58782/flmnh.stwk6834
4020:Meachen, Julie (2005).
3776:Journal of Paleontology
3666:Cracraft, Joel (1968).
3328:10.58782/flmnh.muov4423
3136:10.58782/flmnh.pkqn7297
2922:(3): 92A (Supplement).
2828:29 October 2023 at the
2718:10.58782/flmnh.xumx1681
2634:10.58782/flmnh.kbpj7372
2208:intracranial immobility
2192:Finite Element Analysis
2139:Skull and neck function
2084:been used to break the
1897:articulation tubercular
1603:Andalgalornis steulleti
1078:Phorusrhacos, Kelenken,
591:(lower leg bone) and a
5010:Meylan, P. A. (1982).
4502:(Aves Phorusrhacidae)"
4301:Avian Biology Research
4264:10.1098/rspb.2005.3133
3362:Baskin, J. A. (1995).
2699:: bones of contention"
2472:
1931:
1007:
843:Early Pleistocene-aged
56:Temporal range: Early
27:Extinct genus of birds
6473:Fossils of California
6405:Paleobiology Database
5069:10.1093/auk/100.2.390
5030:28 March 2023 at the
4808:Earth-Science Reviews
3770:Mayr, Gerald (2016).
3118:Morgan, Gary (2005).
2613:Ray, Clayton (2005).
2462:
2453:Further information:
2269:lived alongside both
2117:, a similar genus to
1927:
1893:basipterygoid process
1093:phylogenetic analysis
1001:
853:A newer discovery of
826:Fossil localities of
741:University of Florida
715:; and a shell pit in
380:(lower leg bone) and
4769:10.1029/2008EO490001
3306:Chandler, R (1994).
2398:"saber-toothed" cats
2373:, a glyptodont, and
2308:Santa Cruz Formation
1920:Postcranial skeleton
1868:. The premaxilla of
1852:(skull joint bone),
1620:Andrewsornis abbotti
966:; this included the
837:Early Pliocene-aged
823:class=notpageimage|
5637:Paleontology portal
5481:2015gabi.book.....C
5404:2008PalZ...82..125C
5335:2005JSAES..20..131S
5251:1998TEcoE..13..488B
4970:1991JVPal..11..243W
4820:2014ESRv..135...83D
4761:2008EOSTr..89..501R
4689:2010QuInt.217..143M
4518:2012PLoSO...737701T
4381:2010PLoSO...511856D
4258:(1574): 1769–1773.
4202:2015JVPal..35E2656D
4109:2018PalZ...92..365J
3968:2014Pbio...40..477F
3901:1999JVPal..19..404T
3796:10.1017/jpa.2016.45
3788:2016JPal...90..357M
3721:2013PLoSO...880357A
3629:2020JVPal..40E8855D
3579:10.1511/2014.106.36
3485:12 May 2023 at the
3384:1995JVPal..15..842B
3030:2007Geo....35..123M
2404:are represented by
2350:existed, including
1929:Life reconstruction
1864:and the cranium of
1507:Kelenken guillermoi
1089:Herculano Alvarenga
876:rare-earth elements
867:San Patricio County
33:Titanis (mythology)
6218:Mesembriornithinae
5880:Eleutherornithidae
5412:10.1007/BF02988404
4586:10.1242/jeb.066720
3567:American Scientist
3334:on 20 October 2017
3192:Emslie, S (1998).
3152:P, Meylan (1983).
2833:Journal of Science
2545:The extinction of
2479:at the end of the
2473:
2300:xeric thorn-scrubs
2298:lived in areas of
2216:white-tailed eagle
2178:white-tailed eagle
2174:red-legged seriema
1932:
1844:(top orbit bone),
1460:Mesembriornithinae
1150:Mesembriornithinae
1008:
1004:red-legged seriema
750:cervical vertebrae
737:federal government
585:latest Pleistocene
6420:
6419:
6392:Open Tree of Life
6319:Taxon identifiers
6310:
6309:
6306:
6305:
6281:
6280:
6277:
6276:
6273:
6272:
5818:Ameghinornithidae
5498:978-94-017-9791-7
4729:978-0-511-66738-1
4579:(14): 2425–2434.
3097:978-1-119-99047-5
3038:10.1130/G23186A.1
2945:on 4 October 2018
2867:"Titanis walleri"
2514:Isthmus of Panama
2364:white-tailed deer
2362:, and the extant
2306:. Similarly, the
2094:Thomson's gazelle
1962:, though several
1905:sexual dimorphism
1888:Patagornis marshi
1759:
1758:
1751:
1750:
1727:
1726:
1718:
1717:
1709:
1708:
1700:
1699:
1691:
1690:
1665:
1664:
1637:Patagornis marshi
1531:Devincenzia pozzi
1485:
1484:
1417:
1416:
1393:
1392:
1384:
1383:
1375:
1374:
1315:
1314:
946:During the early
924:Hildegarde Howard
899:fossil collecting
888:Isthmus of Panama
661:, references the
565:Columbia Counties
559:on the border of
541:(UF 4109) (right)
504:Discovery and age
368:by ornithologist
311:
310:
284:
16:(Redirected from
6485:
6478:Fossils of Texas
6413:
6412:
6400:
6399:
6387:
6386:
6374:
6373:
6361:
6360:
6359:
6346:
6345:
6344:
6314:
6301:
6296:
6290:
6246:
6216:
6186:
6149:
6105:
6100:
6084:Paleopsilopterus
6057:
6052:
6045:
6029:
6018:
6007:
5997:
5952:
5901:
5878:
5839:
5816:
5800:
5790:
5780:
5769:
5758:
5748:
5735:
5722:
5667:
5660:
5653:
5644:
5639:
5634:
5633:
5632:
5622:
5621:
5619:
5617:
5597:
5591:
5590:
5580:
5548:
5542:
5541:
5525:
5519:
5518:
5468:
5462:
5461:
5459:
5457:
5431:
5383:
5377:
5376:
5374:
5372:
5354:
5314:
5308:
5297:
5291:
5290:
5288:
5286:
5230:
5224:
5223:
5221:
5219:
5193:
5161:
5155:
5154:
5152:
5150:
5102:
5093:
5092:
5090:
5088:
5048:
5042:
5021:
5015:
5008:
5002:
5001:
4999:
4997:
4955:
4947:
4941:
4940:
4938:
4936:
4910:
4904:
4903:
4901:
4899:
4875:
4869:
4858:
4852:
4851:
4849:
4847:
4799:
4793:
4792:
4790:
4788:
4740:
4734:
4733:
4707:
4701:
4700:
4683:(1–2): 143–158.
4672:
4666:
4665:
4646:
4640:
4639:
4637:
4635:
4613:
4607:
4606:
4588:
4567:Canis familiaris
4563:Acinonyx jubatus
4556:
4550:
4549:
4539:
4529:
4493:
4482:
4481:
4473:
4467:
4466:
4464:
4462:
4422:
4413:
4412:
4402:
4392:
4356:
4345:
4344:
4342:
4340:
4292:
4286:
4285:
4275:
4243:
4232:
4231:
4221:
4181:
4170:
4155:
4149:
4148:
4146:
4144:
4088:
4077:
4066:
4060:
4059:
4057:
4055:
4049:
4026:
4017:
4008:
4007:
4005:
4003:
3947:
3941:
3940:
3938:
3936:
3880:
3874:
3873:
3871:
3847:
3828:
3827:
3825:
3823:
3767:
3761:
3760:
3750:
3732:
3700:
3694:
3693:
3691:
3689:
3683:
3672:
3663:
3657:
3656:
3608:
3595:
3594:
3592:
3590:
3558:
3552:
3551:
3549:
3547:
3499:
3493:
3476:
3467:
3466:
3464:
3462:
3443:
3437:
3436:
3429:Desert Symposium
3423:
3408:
3407:
3405:
3403:
3359:
3344:
3343:
3341:
3339:
3330:. Archived from
3303:
3292:
3291:
3289:
3287:
3268:
3247:
3240:
3234:
3233:
3231:
3229:
3210:10.2307/40166707
3189:
3178:
3177:
3175:
3173:
3149:
3140:
3139:
3115:
3102:
3101:
3080:Living Dinosaurs
3075:
3054:
3053:
3051:
3049:
3007:
2996:
2995:
2993:
2991:
2985:
2970:
2961:
2955:
2954:
2952:
2950:
2944:
2938:. Archived from
2913:
2900:
2887:
2886:
2884:
2882:
2863:
2840:
2819:
2813:
2812:
2810:
2808:
2802:
2769:
2760:
2737:
2736:
2734:
2732:
2726:
2703:
2690:
2653:
2652:
2650:
2648:
2642:
2619:
2610:
2346:A wide array of
2261:Paleoenvironment
2198:, estimated its
2160:
2151:
2030:Feeding and diet
1976:caudal vertebrae
1951:akin to that of
1830:gastornithiforms
1824:as well as some
1769:flightless birds
1654:Physornis fortis
1578:
1571:
1547:
1523:
1499:
1453:
1446:
1436:
1279:
1187:
1165:
1143:
1133:
1118:
842:
836:
816:
815:
807:
806:
798:
797:
789:
788:
780:
779:
773:
713:Charlotte County
525:
516:
298:
276:
269:
256:
243:
183:
182:
161:
151:
81:
48:
43:
36:
21:
6493:
6492:
6488:
6487:
6486:
6484:
6483:
6482:
6423:
6422:
6421:
6416:
6408:
6403:
6395:
6390:
6382:
6377:
6369:
6364:
6355:
6354:
6349:
6340:
6339:
6334:
6321:
6311:
6302:
6291:
6269:
6239:
6209:
6179:
6151:Patagornithinae
6142:
6098:
6047:Phorusrhacoidea
6038:
5968:
5945:
5894:
5871:
5832:
5809:
5729:
5716:
5678:
5671:
5635:
5630:
5628:
5625:
5615:
5613:
5606:The Extinctions
5599:
5598:
5594:
5550:
5549:
5545:
5527:
5526:
5522:
5499:
5470:
5469:
5465:
5455:
5453:
5385:
5384:
5380:
5370:
5368:
5316:
5315:
5311:
5298:
5294:
5284:
5282:
5245:(12): 488–492.
5232:
5231:
5227:
5217:
5215:
5163:
5162:
5158:
5148:
5146:
5104:
5103:
5096:
5086:
5084:
5050:
5049:
5045:
5041:(1–2), 143–158.
5032:Wayback Machine
5022:
5018:
5009:
5005:
4995:
4993:
4949:
4948:
4944:
4934:
4932:
4912:
4911:
4907:
4897:
4895:
4877:
4876:
4872:
4859:
4855:
4845:
4843:
4801:
4800:
4796:
4786:
4784:
4742:
4741:
4737:
4730:
4709:
4708:
4704:
4674:
4673:
4669:
4648:
4647:
4643:
4633:
4631:
4615:
4614:
4610:
4558:
4557:
4553:
4495:
4494:
4485:
4475:
4474:
4470:
4460:
4458:
4424:
4423:
4416:
4358:
4357:
4348:
4338:
4336:
4294:
4293:
4289:
4245:
4244:
4235:
4183:
4182:
4173:
4156:
4152:
4142:
4140:
4090:
4089:
4080:
4067:
4063:
4053:
4051:
4047:
4024:
4019:
4018:
4011:
4001:
3999:
3949:
3948:
3944:
3934:
3932:
3882:
3881:
3877:
3849:
3848:
3831:
3821:
3819:
3769:
3768:
3764:
3702:
3701:
3697:
3687:
3685:
3681:
3670:
3665:
3664:
3660:
3623:(6): e1848855.
3610:
3609:
3598:
3588:
3586:
3560:
3559:
3555:
3545:
3543:
3520:10.2307/1366594
3501:
3500:
3496:
3487:Wayback Machine
3477:
3470:
3460:
3458:
3445:
3444:
3440:
3425:
3424:
3411:
3401:
3399:
3366:Titanis walleri
3361:
3360:
3347:
3337:
3335:
3310:Titanis walleri
3305:
3304:
3295:
3285:
3283:
3270:
3269:
3250:
3241:
3237:
3227:
3225:
3191:
3190:
3181:
3171:
3169:
3151:
3150:
3143:
3117:
3116:
3105:
3098:
3077:
3076:
3057:
3047:
3045:
3009:
3008:
2999:
2989:
2987:
2983:
2968:
2963:
2962:
2958:
2948:
2946:
2942:
2911:
2902:
2901:
2890:
2880:
2878:
2865:
2864:
2843:
2830:Wayback Machine
2820:
2816:
2806:
2804:
2800:
2786:10.2307/4082556
2767:
2762:
2761:
2740:
2730:
2728:
2724:
2701:
2697:Titanis walleri
2692:
2691:
2656:
2646:
2644:
2640:
2617:
2612:
2611:
2592:
2588:
2557:, and possibly
2543:
2457:
2451:
2263:
2184:
2183:
2182:
2181:
2163:
2162:
2161:
2153:
2152:
2141:
2069:
2032:
2012:
2004:flight feathers
1922:
1854:orbital process
1848:(palate bone),
1838:
1826:struthioniforms
1765:
1760:
1752:
1743:
1742:
1741:Patagornithinae
1739:
1734:
1728:
1719:
1710:
1701:
1692:
1666:
1555:Titanis walleri
1486:
1432:(2015) results
1420:
1418:
1409:
1408:
1407:Patagornithinae
1405:
1400:
1394:
1385:
1376:
1316:
1129:(2011) results
1087:paleontologist
1043:, cheetah-like
944:
897:In 1961, while
851:
846:
845:
844:
830:
825:
819:
818:
817:
809:
808:
800:
799:
791:
790:
782:
781:
754:carpometacarpus
717:Sarasota County
651:Titanis walleri
632:Pierce Brodkorb
589:tarsometatarsus
545:
544:
543:
542:
535:tarsometatarsus
528:
527:
526:
518:
517:
506:
433:that dominated
378:tarsometatarsus
370:Pierce Brodkorb
365:Titanis walleri
362:and were named
342:, in the order
324:Greek mythology
307:
304:
301:Titanis walleri
275:
267:
254:
241:
177:
152:
150:
149:
148:
147:
142:
137:
132:
127:
122:
117:
112:
107:
102:
97:
92:
87:
76:
75:
73:
54:
44:
37:
30:
28:
23:
22:
18:Titanis walleri
15:
12:
11:
5:
6491:
6489:
6481:
6480:
6475:
6470:
6465:
6460:
6455:
6450:
6445:
6443:Phorusrhacinae
6440:
6435:
6425:
6424:
6418:
6417:
6415:
6414:
6401:
6388:
6375:
6362:
6347:
6331:
6329:
6323:
6322:
6317:
6308:
6307:
6304:
6303:
6285:
6284:
6282:
6279:
6278:
6275:
6274:
6271:
6270:
6268:
6267:
6260:
6252:
6250:
6248:Physornithinae
6241:
6240:
6238:
6237:
6230:
6222:
6220:
6211:
6210:
6208:
6207:
6200:
6192:
6190:
6181:
6180:
6178:
6177:
6170:
6163:
6155:
6153:
6144:
6143:
6141:
6140:
6133:
6126:
6119:
6111:
6109:
6107:Phorusrhacinae
6097:
6096:
6088:
6080:
6072:
6063:
6061:
6059:Phorusrhacidae
6049:
6040:
6039:
6037:
6036:
6025:
6014:
6003:
5993:
5986:
5978:
5976:
5970:
5969:
5967:
5966:
5958:
5956:
5947:
5946:
5944:
5943:
5936:
5929:
5922:
5915:
5907:
5905:
5896:
5895:
5893:
5892:
5884:
5882:
5873:
5872:
5870:
5869:
5861:
5853:
5845:
5843:
5841:Bathornithidae
5834:
5833:
5831:
5830:
5822:
5820:
5811:
5810:
5808:
5807:
5796:
5786:
5776:
5765:
5754:
5743:
5741:
5739:incertae sedis
5731:
5730:
5725:
5718:
5717:
5715:
5714:
5708:
5702:
5696:
5690:
5683:
5680:
5679:
5672:
5670:
5669:
5662:
5655:
5647:
5641:
5640:
5624:
5623:
5592:
5563:(4): 245–264.
5543:
5520:
5497:
5463:
5398:(2): 125–138.
5378:
5329:(1): 131–138.
5309:
5292:
5225:
5156:
5117:(2): 245–257.
5094:
5063:(2): 390–403.
5043:
5016:
5003:
4964:(2): 243–246.
4942:
4905:
4870:
4853:
4794:
4735:
4728:
4702:
4667:
4641:
4608:
4551:
4483:
4468:
4414:
4346:
4307:(4): 187–194.
4287:
4233:
4196:(2): e912656.
4171:
4150:
4103:(2): 365–372.
4078:
4061:
4035:(4): 435–447.
4009:
3962:(3): 477–493.
3942:
3895:(2): 404–406.
3875:
3829:
3782:(2): 357–374.
3762:
3715:(11): e80357.
3695:
3677:(2326): 1–46.
3658:
3596:
3553:
3514:(3): 341–344.
3494:
3468:
3438:
3409:
3378:(4): 842–844.
3345:
3322:(6): 175–180.
3293:
3248:
3235:
3179:
3141:
3130:(4): 271–311.
3103:
3096:
3055:
3024:(2): 123–126.
2997:
2956:
2888:
2841:
2814:
2780:(2): 111–115.
2738:
2712:(4): 201–229.
2654:
2628:(4): 143–170.
2589:
2587:
2584:
2542:
2539:
2450:
2447:
2337:perissodactyls
2262:
2259:
2241:neck vertebrae
2165:
2164:
2155:
2154:
2146:
2145:
2144:
2143:
2142:
2140:
2137:
2068:
2065:
2040:apex predators
2031:
2028:
2024:Andalgalornis.
2011:
2008:
1921:
1918:
1858:quadratojugals
1837:
1834:
1832:being larger.
1764:
1761:
1757:
1756:
1749:
1748:
1745:
1744:
1740:
1737:Phorusrhacinae
1735:
1733:Physornithinae
1732:
1731:
1729:
1725:
1724:
1721:
1720:
1716:
1715:
1712:
1711:
1707:
1706:
1703:
1702:
1698:
1697:
1694:
1693:
1689:
1688:
1685:
1684:
1675:
1672:
1671:
1668:
1667:
1663:
1662:
1659:
1658:
1649:
1646:
1645:
1642:
1641:
1632:
1629:
1628:
1625:
1624:
1615:
1612:
1611:
1608:
1607:
1598:
1595:
1594:
1591:
1590:
1581:
1576:
1574:
1569:
1567:
1564:
1563:
1560:
1559:
1550:
1545:
1543:
1540:
1539:
1536:
1535:
1526:
1521:
1519:
1516:
1515:
1512:
1511:
1502:
1497:
1495:
1492:
1491:
1488:
1487:
1483:
1482:
1479:
1478:
1471:
1468:
1467:
1464:
1463:
1456:
1451:
1449:
1444:
1442:
1440:Phorusrhacidae
1434:
1422:
1415:
1414:
1411:
1410:
1406:
1403:Phorusrhacinae
1401:
1399:Physornithinae
1398:
1397:
1395:
1391:
1390:
1387:
1386:
1382:
1381:
1378:
1377:
1373:
1372:
1369:
1368:
1359:
1356:
1355:
1352:
1351:
1342:
1339:
1338:
1335:
1334:
1325:
1322:
1321:
1318:
1317:
1313:
1312:
1309:
1308:
1299:
1296:
1295:
1292:
1291:
1282:
1277:
1275:
1272:
1271:
1268:
1267:
1258:
1255:
1254:
1251:
1250:
1241:
1238:
1237:
1234:
1233:
1224:
1221:
1220:
1217:
1216:
1207:
1204:
1203:
1200:
1199:
1190:
1185:
1183:
1180:
1179:
1176:
1175:
1168:
1163:
1161:
1158:
1157:
1154:
1153:
1146:
1141:
1139:
1137:Phorusrhacidae
1131:
1116:
980:Phorusrhacidae
972:Dromornithidae
968:Gastornithidae
943:
942:Classification
940:
903:Olla Formation
850:
847:
821:
820:
811:
810:
802:
801:
793:
792:
784:
783:
775:
774:
768:
767:
766:
709:Port Charlotte
557:Santa Fe River
530:
529:
520:
519:
511:
510:
509:
508:
507:
505:
502:
431:apex predators
356:Santa Fe River
309:
308:
306:Brodkorb, 1963
305:
293:
292:
286:
285:
265:
261:
260:
258:Phorusrhacinae
252:
248:
247:
245:Phorusrhacidae
239:
235:
234:
229:
225:
224:
219:
215:
214:
209:
205:
204:
199:
195:
194:
189:
185:
184:
171:
170:
163:
162:
154:
153:
145:
144:
143:
138:
133:
128:
123:
118:
113:
108:
103:
98:
93:
88:
83:
82:
55:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
6490:
6479:
6476:
6474:
6471:
6469:
6466:
6464:
6461:
6459:
6456:
6454:
6451:
6449:
6446:
6444:
6441:
6439:
6436:
6434:
6431:
6430:
6428:
6411:
6406:
6402:
6398:
6393:
6389:
6385:
6380:
6376:
6372:
6367:
6363:
6358:
6352:
6348:
6343:
6337:
6333:
6332:
6330:
6328:
6324:
6320:
6315:
6300:
6295:
6289:
6266:
6265:
6264:Paraphysornis
6261:
6259:
6258:
6254:
6253:
6251:
6249:
6242:
6236:
6235:
6234:Mesembriornis
6231:
6229:
6228:
6224:
6223:
6221:
6219:
6212:
6206:
6205:
6201:
6199:
6198:
6194:
6193:
6191:
6189:
6188:Psilopterinae
6182:
6176:
6175:
6171:
6169:
6168:
6164:
6162:
6161:
6160:Andalgalornis
6157:
6156:
6154:
6152:
6145:
6139:
6138:
6134:
6132:
6131:
6127:
6125:
6124:
6120:
6118:
6117:
6113:
6112:
6110:
6108:
6101:
6094:
6093:
6089:
6086:
6085:
6081:
6078:
6077:
6073:
6070:
6069:
6065:
6064:
6062:
6060:
6053:
6050:
6048:
6041:
6034:
6033:
6026:
6023:
6022:
6015:
6012:
6011:
6004:
6002:
6001:
5994:
5992:
5991:
5987:
5985:
5984:
5980:
5979:
5977:
5975:
5971:
5965:
5964:
5960:
5959:
5957:
5955:
5948:
5942:
5941:
5937:
5935:
5934:
5930:
5928:
5927:
5923:
5921:
5920:
5916:
5914:
5913:
5909:
5908:
5906:
5904:
5903:Idiornithidae
5897:
5891:
5890:
5889:Eleutherornis
5886:
5885:
5883:
5881:
5874:
5867:
5866:
5862:
5859:
5858:
5854:
5852:
5851:
5847:
5846:
5844:
5842:
5835:
5829:
5828:
5824:
5823:
5821:
5819:
5812:
5805:
5804:
5797:
5795:
5794:
5787:
5785:
5784:
5777:
5774:
5773:
5766:
5763:
5762:
5755:
5753:
5752:
5751:Elaphrocnemus
5745:
5744:
5742:
5740:
5736:
5732:
5728:
5727:Cariamiformes
5723:
5719:
5713:
5712:Cariamiformes
5709:
5707:
5703:
5701:
5697:
5695:
5691:
5689:
5685:
5684:
5681:
5676:
5668:
5663:
5661:
5656:
5654:
5649:
5648:
5645:
5638:
5627:
5611:
5607:
5603:
5596:
5593:
5588:
5584:
5579:
5574:
5570:
5566:
5562:
5558:
5554:
5547:
5544:
5539:
5535:
5531:
5524:
5521:
5516:
5512:
5508:
5504:
5500:
5494:
5490:
5486:
5482:
5478:
5474:
5467:
5464:
5451:
5447:
5443:
5439:
5435:
5430:
5425:
5421:
5417:
5413:
5409:
5405:
5401:
5397:
5393:
5389:
5382:
5379:
5366:
5362:
5358:
5353:
5348:
5344:
5340:
5336:
5332:
5328:
5324:
5320:
5313:
5310:
5307:(4), 319–340.
5306:
5302:
5296:
5293:
5280:
5276:
5272:
5268:
5264:
5260:
5256:
5252:
5248:
5244:
5240:
5236:
5229:
5226:
5213:
5209:
5205:
5201:
5197:
5192:
5187:
5183:
5179:
5175:
5171:
5167:
5160:
5157:
5144:
5140:
5136:
5132:
5128:
5124:
5120:
5116:
5112:
5108:
5101:
5099:
5095:
5082:
5078:
5074:
5070:
5066:
5062:
5058:
5054:
5047:
5044:
5040:
5036:
5033:
5029:
5026:
5020:
5017:
5013:
5007:
5004:
4991:
4987:
4983:
4979:
4975:
4971:
4967:
4963:
4959:
4954:
4946:
4943:
4930:
4926:
4922:
4918:
4917:
4909:
4906:
4893:
4889:
4885:
4881:
4874:
4871:
4867:
4863:
4857:
4854:
4841:
4837:
4833:
4829:
4825:
4821:
4817:
4813:
4809:
4805:
4798:
4795:
4782:
4778:
4774:
4770:
4766:
4762:
4758:
4754:
4750:
4746:
4739:
4736:
4731:
4725:
4721:
4717:
4713:
4706:
4703:
4698:
4694:
4690:
4686:
4682:
4678:
4671:
4668:
4663:
4659:
4655:
4654:
4645:
4642:
4629:
4625:
4624:
4619:
4612:
4609:
4604:
4600:
4596:
4592:
4587:
4582:
4578:
4574:
4570:
4568:
4564:
4555:
4552:
4547:
4543:
4538:
4533:
4528:
4523:
4519:
4515:
4512:(5): e37701.
4511:
4507:
4503:
4501:
4492:
4490:
4488:
4484:
4479:
4472:
4469:
4456:
4452:
4448:
4444:
4440:
4436:
4432:
4428:
4421:
4419:
4415:
4410:
4406:
4401:
4396:
4391:
4386:
4382:
4378:
4375:(8): e11856.
4374:
4370:
4366:
4364:
4355:
4353:
4351:
4347:
4334:
4330:
4326:
4322:
4318:
4314:
4310:
4306:
4302:
4298:
4291:
4288:
4283:
4279:
4274:
4269:
4265:
4261:
4257:
4253:
4249:
4242:
4240:
4238:
4234:
4229:
4225:
4220:
4215:
4211:
4207:
4203:
4199:
4195:
4191:
4187:
4180:
4178:
4176:
4172:
4168:
4164:
4160:
4154:
4151:
4138:
4134:
4130:
4126:
4122:
4118:
4114:
4110:
4106:
4102:
4098:
4094:
4087:
4085:
4083:
4079:
4075:
4071:
4065:
4062:
4046:
4042:
4038:
4034:
4030:
4023:
4016:
4014:
4010:
3997:
3993:
3989:
3985:
3981:
3977:
3976:10.1666/13055
3973:
3969:
3965:
3961:
3957:
3953:
3946:
3943:
3930:
3926:
3922:
3918:
3914:
3910:
3906:
3902:
3898:
3894:
3890:
3886:
3879:
3876:
3870:
3865:
3861:
3857:
3853:
3846:
3844:
3842:
3840:
3838:
3836:
3834:
3830:
3817:
3813:
3809:
3805:
3801:
3797:
3793:
3789:
3785:
3781:
3777:
3773:
3766:
3763:
3758:
3754:
3749:
3744:
3740:
3736:
3731:
3726:
3722:
3718:
3714:
3710:
3706:
3699:
3696:
3680:
3676:
3669:
3662:
3659:
3654:
3650:
3646:
3642:
3638:
3634:
3630:
3626:
3622:
3618:
3614:
3607:
3605:
3603:
3601:
3597:
3584:
3580:
3576:
3572:
3568:
3564:
3557:
3554:
3541:
3537:
3533:
3529:
3525:
3521:
3517:
3513:
3509:
3505:
3498:
3495:
3491:
3488:
3484:
3481:
3475:
3473:
3469:
3456:
3452:
3448:
3442:
3439:
3434:
3430:
3422:
3420:
3418:
3416:
3414:
3410:
3397:
3393:
3389:
3385:
3381:
3377:
3373:
3369:
3367:
3358:
3356:
3354:
3352:
3350:
3346:
3333:
3329:
3325:
3321:
3317:
3313:
3311:
3308:"The wing of
3302:
3300:
3298:
3294:
3281:
3277:
3273:
3267:
3265:
3263:
3261:
3259:
3257:
3255:
3253:
3249:
3245:
3239:
3236:
3223:
3219:
3215:
3211:
3207:
3203:
3199:
3195:
3188:
3186:
3184:
3180:
3167:
3163:
3159:
3155:
3148:
3146:
3142:
3137:
3133:
3129:
3125:
3121:
3114:
3112:
3110:
3108:
3104:
3099:
3093:
3089:
3085:
3081:
3074:
3072:
3070:
3068:
3066:
3064:
3062:
3060:
3056:
3043:
3039:
3035:
3031:
3027:
3023:
3019:
3018:
3013:
3006:
3004:
3002:
2998:
2982:
2978:
2974:
2967:
2960:
2957:
2941:
2937:
2933:
2929:
2925:
2921:
2917:
2910:
2908:
2899:
2897:
2895:
2893:
2889:
2876:
2872:
2868:
2862:
2860:
2858:
2856:
2854:
2852:
2850:
2848:
2846:
2842:
2838:
2834:
2831:
2827:
2824:
2818:
2815:
2799:
2795:
2791:
2787:
2783:
2779:
2775:
2774:
2766:
2759:
2757:
2755:
2753:
2751:
2749:
2747:
2745:
2743:
2739:
2723:
2719:
2715:
2711:
2707:
2700:
2698:
2689:
2687:
2685:
2683:
2681:
2679:
2677:
2675:
2673:
2671:
2669:
2667:
2665:
2663:
2661:
2659:
2655:
2639:
2635:
2631:
2627:
2623:
2616:
2609:
2607:
2605:
2603:
2601:
2599:
2597:
2595:
2591:
2585:
2583:
2581:
2576:
2572:
2568:
2564:
2560:
2556:
2552:
2548:
2540:
2538:
2536:
2531:
2527:
2523:
2519:
2515:
2510:
2505:
2503:
2499:
2495:
2491:
2490:antilocaprids
2487:
2482:
2478:
2470:
2466:
2461:
2456:
2448:
2446:
2444:
2440:
2439:
2435:
2431:
2430:birds of prey
2427:
2423:
2419:
2415:
2411:
2407:
2403:
2399:
2395:
2391:
2387:
2383:
2382:ground sloths
2379:
2376:
2372:
2368:
2365:
2361:
2357:
2353:
2349:
2345:
2342:
2338:
2334:
2329:
2327:
2323:
2319:
2315:
2314:
2309:
2305:
2301:
2297:
2292:
2288:
2285:
2284:longleaf pine
2280:
2276:
2272:
2268:
2260:
2258:
2255:
2251:
2250:plesiomorphic
2246:
2245:Andalgalornis
2242:
2238:
2237:Andalgalornis
2233:
2230:
2226:
2225:Andalgalornis
2221:
2220:Andalgalornis
2217:
2213:
2209:
2205:
2201:
2197:
2193:
2189:
2188:Andalgalornis
2179:
2175:
2171:
2170:
2169:Andalgalornis
2159:
2150:
2138:
2136:
2134:
2133:
2132:Tyrannosaurus
2128:
2124:
2120:
2116:
2112:
2108:
2104:
2099:
2095:
2091:
2087:
2082:
2081:Mesembriornis
2078:
2074:
2066:
2064:
2062:
2058:
2054:
2048:
2046:
2045:biomechanical
2041:
2037:
2029:
2027:
2025:
2021:
2017:
2009:
2007:
2005:
2001:
1997:
1992:
1988:
1983:
1981:
1977:
1973:
1969:
1965:
1961:
1957:
1954:
1953:dromaeosaurid
1950:
1946:
1941:
1937:
1930:
1926:
1919:
1917:
1915:
1910:
1906:
1902:
1898:
1894:
1890:
1889:
1884:
1880:
1876:
1875:cross-section
1871:
1867:
1863:
1859:
1855:
1851:
1847:
1843:
1835:
1833:
1831:
1827:
1823:
1819:
1815:
1810:
1806:
1802:
1798:
1794:
1790:
1786:
1782:
1778:
1774:
1770:
1762:
1755:
1747:
1746:
1738:
1723:
1722:
1714:
1713:
1705:
1704:
1696:
1695:
1687:
1686:
1683:
1682:
1681:
1674:
1673:
1670:
1669:
1661:
1660:
1657:
1656:
1655:
1648:
1647:
1644:
1643:
1640:
1639:
1638:
1631:
1630:
1627:
1626:
1623:
1622:
1621:
1614:
1613:
1610:
1609:
1606:
1605:
1604:
1597:
1596:
1593:
1592:
1589:
1588:
1587:
1580:
1579:
1573:
1572:
1566:
1565:
1562:
1561:
1558:
1557:
1556:
1549:
1548:
1542:
1541:
1538:
1537:
1534:
1533:
1532:
1525:
1524:
1518:
1517:
1514:
1513:
1510:
1509:
1508:
1501:
1500:
1494:
1493:
1490:
1489:
1481:
1480:
1477:
1476:
1475:Psilopterinae
1470:
1469:
1466:
1465:
1462:
1461:
1455:
1454:
1448:
1447:
1441:
1438:
1437:
1433:
1431:
1427:
1423:
1421:
1413:
1412:
1404:
1389:
1388:
1380:
1379:
1371:
1370:
1367:
1366:
1365:
1364:Paraphysornis
1358:
1357:
1354:
1353:
1350:
1349:
1348:
1341:
1340:
1337:
1336:
1333:
1332:
1331:
1324:
1323:
1320:
1319:
1311:
1310:
1307:
1306:
1305:
1298:
1297:
1294:
1293:
1290:
1289:
1288:
1281:
1280:
1274:
1273:
1270:
1269:
1266:
1265:
1264:
1257:
1256:
1253:
1252:
1249:
1248:
1247:
1240:
1239:
1236:
1235:
1232:
1231:
1230:
1229:Andalgalornis
1223:
1222:
1219:
1218:
1215:
1214:
1213:
1206:
1205:
1202:
1201:
1198:
1197:
1196:
1189:
1188:
1182:
1181:
1178:
1177:
1174:
1173:
1172:Psilopterinae
1167:
1166:
1160:
1159:
1156:
1155:
1152:
1151:
1145:
1144:
1138:
1135:
1134:
1130:
1128:
1124:
1120:
1119:
1115:
1113:
1109:
1107:
1102:
1098:
1094:
1090:
1086:
1083:
1079:
1075:
1071:
1066:
1064:
1060:
1059:
1054:
1053:
1048:
1047:
1042:
1041:
1036:
1032:
1028:
1024:
1023:thylacosmilid
1021:
1017:
1013:
1005:
1000:
996:
994:
993:bathornithids
989:
985:
984:Cariamiformes
981:
977:
976:Palaeognathae
973:
969:
965:
961:
958:underwent an
957:
953:
949:
941:
939:
937:
933:
929:
925:
921:
920:
916:
912:
908:
904:
900:
895:
893:
889:
885:
881:
877:
872:
868:
864:
860:
856:
848:
841:
835:
829:
824:
772:
765:
763:
759:
755:
751:
747:
742:
738:
734:
730:
726:
722:
718:
714:
710:
706:
705:Citrus County
702:
698:
694:
692:
691:
686:
685:
680:
676:
675:type specimen
672:
668:
667:specific name
664:
660:
656:
652:
648:
644:
640:
637:
636:Rancholabrean
633:
628:
626:
622:
621:
616:
615:
610:
609:stratigraphic
606:
602:
598:
594:
593:pedal phalanx
590:
586:
582:
578:
577:proboscideans
574:
570:
566:
562:
558:
554:
550:
540:
539:pedal phalanx
536:
533:
524:
515:
503:
501:
499:
495:
491:
487:
483:
479:
478:
477:Glyptotherium
473:
472:
467:
462:
458:
457:
456:Andalgalornis
452:
448:
444:
440:
436:
432:
428:
423:
420:
416:
415:
410:
405:
404:
402:
397:
396:
391:
387:
383:
379:
375:
371:
367:
366:
361:
357:
353:
350:and earliest
349:
345:
344:Cariamiformes
341:
337:
333:
329:
325:
321:
317:
316:
303:
302:
294:
291:
287:
283:
279:
274:
273:
266:
263:
262:
259:
253:
250:
249:
246:
240:
237:
236:
233:
232:Cariamiformes
230:
227:
226:
223:
220:
217:
216:
213:
210:
207:
206:
203:
200:
197:
196:
193:
190:
187:
186:
181:
176:
172:
169:
164:
160:
155:
141:
136:
131:
126:
121:
116:
111:
106:
101:
96:
91:
86:
80:
71:
67:
63:
59:
53:
49:
46:
41:
34:
19:
6326:
6262:
6255:
6232:
6225:
6202:
6195:
6172:
6167:Andrewsornis
6165:
6158:
6136:
6135:
6130:Phorusrhacos
6128:
6121:
6114:
6092:Patagorhacos
6090:
6082:
6074:
6066:
6030:
6019:
6008:
5998:
5988:
5981:
5961:
5938:
5933:Occitaniavis
5931:
5924:
5917:
5910:
5887:
5863:
5857:Eutreptornis
5855:
5848:
5825:
5801:
5791:
5781:
5770:
5759:
5749:
5738:
5704:Superorder:
5614:. Retrieved
5605:
5595:
5560:
5556:
5546:
5537:
5533:
5523:
5472:
5466:
5454:. Retrieved
5395:
5391:
5381:
5369:. Retrieved
5326:
5322:
5312:
5304:
5300:
5295:
5283:. Retrieved
5242:
5238:
5228:
5216:. Retrieved
5173:
5169:
5159:
5147:. Retrieved
5114:
5110:
5085:. Retrieved
5060:
5056:
5046:
5038:
5034:
5019:
5011:
5006:
4994:. Retrieved
4961:
4957:
4945:
4933:. Retrieved
4915:
4908:
4896:. Retrieved
4887:
4883:
4873:
4865:
4861:
4856:
4844:. Retrieved
4811:
4807:
4797:
4785:. Retrieved
4752:
4748:
4738:
4711:
4705:
4680:
4676:
4670:
4652:
4644:
4632:. Retrieved
4621:
4611:
4576:
4572:
4566:
4562:
4554:
4509:
4505:
4499:
4477:
4471:
4459:. Retrieved
4437:(3): 55–86.
4434:
4430:
4372:
4368:
4362:
4337:. Retrieved
4304:
4300:
4290:
4255:
4251:
4193:
4189:
4166:
4162:
4153:
4141:. Retrieved
4100:
4096:
4073:
4069:
4064:
4052:. Retrieved
4032:
4028:
4000:. Retrieved
3959:
3956:Paleobiology
3955:
3945:
3933:. Retrieved
3892:
3888:
3878:
3862:(4): 55–91.
3859:
3855:
3820:. Retrieved
3779:
3775:
3765:
3712:
3708:
3698:
3686:. Retrieved
3674:
3661:
3620:
3616:
3587:. Retrieved
3570:
3566:
3556:
3544:. Retrieved
3511:
3507:
3497:
3489:
3459:. Retrieved
3450:
3441:
3432:
3428:
3400:. Retrieved
3375:
3371:
3365:
3336:. Retrieved
3332:the original
3319:
3315:
3309:
3284:. Retrieved
3275:
3243:
3238:
3226:. Retrieved
3201:
3197:
3170:. Retrieved
3161:
3157:
3127:
3123:
3079:
3046:. Retrieved
3021:
3015:
2988:. Retrieved
2976:
2972:
2959:
2947:. Retrieved
2940:the original
2919:
2915:
2906:
2879:. Retrieved
2870:
2836:
2832:
2817:
2805:. Retrieved
2777:
2771:
2729:. Retrieved
2709:
2705:
2696:
2645:. Retrieved
2625:
2621:
2579:
2574:
2566:
2562:
2546:
2544:
2525:
2521:
2517:
2506:
2498:amphicyonids
2494:gomphotheres
2488:, tapirids,
2474:
2468:
2436:
2425:
2385:
2377:
2366:
2348:artiodactyls
2343:
2332:
2330:
2318:Phorusrhacos
2317:
2313:Phorusrhacos
2311:
2295:
2278:
2266:
2264:
2253:
2244:
2236:
2234:
2228:
2224:
2219:
2211:
2187:
2185:
2167:
2130:
2118:
2114:
2111:Luis Chiappe
2080:
2076:
2070:
2067:Leg function
2049:
2033:
2023:
2019:
2015:
2013:
2010:Paleobiology
1999:
1995:
1984:
1959:
1939:
1935:
1933:
1887:
1879:Phorusrhacos
1878:
1869:
1866:Phorusrhacos
1865:
1861:
1839:
1821:
1817:
1813:
1808:
1805:Phorusrachos
1804:
1800:
1788:
1784:
1780:
1777:Phorusrhacos
1776:
1772:
1766:
1753:
1736:
1678:
1677:
1652:
1651:
1635:
1634:
1618:
1617:
1601:
1600:
1584:
1583:
1554:
1553:
1552:
1529:
1528:
1505:
1504:
1473:
1458:
1429:
1425:
1424:
1419:
1402:
1362:
1361:
1345:
1344:
1328:
1327:
1302:
1301:
1285:
1284:
1262:
1261:
1260:
1246:Phorusrhacos
1244:
1243:
1227:
1226:
1212:Andrewsornis
1210:
1209:
1193:
1192:
1170:
1148:
1126:
1122:
1121:
1112:polyphyletic
1104:
1096:
1082:Devincenzia.
1081:
1077:
1073:
1067:
1056:
1050:
1049:, wolf-like
1044:
1038:
1030:
1015:
1009:
950:, after the
945:
935:
931:
927:
917:
896:
891:
879:
870:
863:Nueces River
854:
852:
827:
761:
748:, including
745:
744:belonged to
724:
720:
696:
695:
688:
684:Phorusrhacos
682:
678:
670:
663:Greek Titans
658:
655:generic name
650:
629:
618:
612:
605:phorusrhacid
548:
546:
493:
475:
469:
460:
454:
450:
446:
424:
418:
414:Phorusrhacos
412:
408:
406:
399:
393:
364:
363:
332:phorusrhacid
314:
313:
312:
300:
299:
290:Type species
271:
270:
51:
45:
6438:Bird genera
6351:Wikispecies
6227:Llallawavis
6204:Psilopterus
6116:Devincenzia
6010:Pseudolarus
5940:Propelargus
5803:Lavocatavis
5783:Similiornis
5706:Australaves
5429:11336/36844
5352:11336/80762
5176:(1): 3–21.
4890:: 153–163.
4755:(49): 501.
4219:11336/38650
3272:"Inglis 1A"
2979:(1): 1–37.
2390:borophagins
2190:, based on
2107:glyptodonts
2073:tibiotarsus
2000:Llallawavis
1909:ontogenetic
1818:Devincenzia
1812:still make
1785:Devincenzia
1781:Devincenzia
1763:Description
1426:Topology 2:
1287:Devincenzia
1123:Topology 1:
1106:Llallawavis
1046:Miracinonyx
1035:carnivorans
1020:metatherian
884:Hemphillian
690:Devincenzia
647:description
597:Clayton Ray
395:Devincenzia
352:Pleistocene
251:Subfamily:
77:5–1.8
66:Hemphillian
62:Pleistocene
6427:Categories
6197:Procariama
6174:Patagornis
6068:Brontornis
6032:Smiliornis
6000:Miocariama
5974:Cariamidae
5954:Salmilidae
5827:Strigogyps
5793:Talantatos
5772:Itaboravis
5761:Gradiornis
5673:Genera of
5191:11336/2663
4868:(1), 1–92.
4814:: 83–102.
4076:, 501–514.
3508:The Condor
3435:: 181–183.
2949:19 October
2586:References
2541:Extinction
2438:Teratornis
2410:porcupines
2375:dasypodids
2371:pampathere
2360:pronghorns
2200:bite force
2103:armadillos
2086:long-bones
2077:Patagornis
2036:scavengers
1996:Patagornis
1856:, and two
1330:Brontornis
1195:Patagornis
1125:Alvarenga
978:, and the
911:premaxilla
861:along the
758:metatarsal
620:Borophagus
468:relatives
443:borhyaenid
427:scavengers
390:California
6257:Physornis
6076:Macrornis
5926:Oblitavis
5912:Gypsornis
5850:Bathornis
5686:Kingdom:
5616:30 August
5515:131800527
5507:2191-589X
5446:128528271
5438:0031-0220
5420:1867-6812
5361:0895-9811
5267:0169-5347
5208:254703164
5200:1573-7055
5139:198152030
5131:0026-6493
5087:28 August
5077:0004-8038
4986:0272-4634
4836:0012-8252
4777:0096-3941
4451:0084-5620
4321:1758-1559
4163:Diversity
4133:134344096
4125:1867-6812
3984:0094-8373
3917:0272-4634
3804:0022-3360
3739:1932-6203
3653:234119602
3645:0272-4634
3528:0010-5422
2936:220413406
2530:procyonid
2509:Paleogene
2502:mammutids
2406:capybaras
2352:peccaries
2326:"Ice Age"
2287:flatwoods
2123:greyhound
1964:vertebrae
1956:dinosaurs
1914:symphysis
1846:pterygoid
1428:Degrange
1347:Physornis
1085:Brazilian
1027:placental
1012:Paleocene
964:gigantism
919:Aiolornis
701:Inglis 1b
614:Nannippus
561:Gilchrist
553:artifacts
490:capybaras
471:Holmesina
466:armadillo
451:Kelenken,
445:mammals.
439:placental
198:Kingdom:
192:Eukaryota
6336:Wikidata
6123:Kelenken
5919:Idiornis
5865:Paracrax
5694:Chordata
5692:Phylum:
5688:Animalia
5675:Seriemas
5610:Archived
5587:21125025
5540:: 37–45.
5450:Archived
5365:Archived
5279:Archived
5275:21238405
5212:Archived
5143:Archived
5081:Archived
5028:Archived
4990:Archived
4929:Archived
4892:Archived
4840:Archived
4781:Archived
4628:Archived
4603:13543638
4595:22723482
4546:22662194
4506:PLOS ONE
4455:Archived
4409:20805872
4369:PLOS ONE
4333:Archived
4329:84767939
4282:16096087
4228:85212917
4169:(2), 90.
4137:Archived
4045:Archived
3996:Archived
3992:85759838
3929:Archived
3816:Archived
3812:88936361
3757:24312212
3709:PLOS ONE
3679:Archived
3583:Archived
3540:Archived
3483:Archived
3455:Archived
3396:Archived
3280:Archived
3246:, 352 p.
3222:Archived
3218:40166707
3166:Archived
3164:: 1–85.
3042:Archived
2981:Archived
2875:Archived
2826:Archived
2798:Archived
2722:Archived
2638:Archived
2481:Mesozoic
2477:Gondwana
2471:in olive
2434:teratorn
2426:Titanis.
2422:muskrats
2400:. Large
2394:hyaenids
2356:camelids
2304:savannas
2291:pine-oak
2275:Holocene
2196:CT scans
2115:Kelenken
2057:lacrimal
2020:Kelenken
1991:theropod
1850:quadrate
1822:Kelenken
1304:Kelenken
1101:polytomy
1058:Arctodus
1052:Aenocyon
1040:Smilodon
988:seriemas
948:Cenozoic
915:teratorn
831:Legend:
756:, and a
729:sinkhole
581:Pliocene
532:Holotype
435:Cenozoic
401:Kelenken
374:holotype
348:Pliocene
278:Brodkorb
238:Family:
212:Chordata
208:Phylum:
202:Animalia
188:Domain:
58:Pliocene
6397:4131165
6384:1368513
6371:4852149
6357:Titanis
6342:Q427685
6327:Titanis
6137:Titanis
6021:Riacama
5983:Cariama
5963:Salmila
5710:Clade:
5698:Class:
5578:2987556
5477:Bibcode
5400:Bibcode
5331:Bibcode
5285:18 June
5247:Bibcode
5218:16 July
5057:The Auk
4966:Bibcode
4898:31 July
4816:Bibcode
4757:Bibcode
4685:Bibcode
4537:3360764
4514:Bibcode
4400:2923598
4377:Bibcode
4339:16 July
4273:1559870
4198:Bibcode
4105:Bibcode
3964:Bibcode
3925:4524003
3897:Bibcode
3784:Bibcode
3748:3842325
3717:Bibcode
3688:31 July
3625:Bibcode
3546:28 June
3536:1366594
3492:, (89).
3402:20 June
3380:Bibcode
3338:3 April
3172:31 July
3048:20 June
3026:Bibcode
3017:Geology
2990:20 June
2907:Titanis
2839:(2), 9.
2807:3 April
2794:4082556
2731:3 April
2647:20 June
2580:Titanis
2575:Titanis
2567:Titanis
2563:Titanis
2547:Titanis
2526:Titanis
2522:Titanis
2518:Titanis
2469:Titanis
2443:turkeys
2418:rabbits
2402:rodents
2333:Titanis
2296:Titanis
2279:Titanis
2271:endemic
2267:Titanis
2254:Titanis
2212:Titanis
2204:Newtons
2127:grazing
2119:Titanis
2016:Titanis
1987:ratites
1960:Titanis
1940:Titanis
1936:Titanis
1870:Titanis
1862:Titanis
1842:frontal
1814:Titanis
1809:Titanis
1801:Titanis
1793:ostrich
1789:Titanis
1773:Titanis
1263:Titanis
1097:Titanis
1074:Titanis
1031:Titanis
1016:Titanis
956:mammals
936:Titanis
932:Titanis
926:in 1972
892:Titanis
880:Titanis
871:Titanis
855:Titanis
828:Titanis
762:Titanis
746:Titanis
735:by the
725:Titanis
721:Titanis
697:Titanis
679:Titanis
671:walleri
659:Titanis
625:Blancan
549:Titanis
494:Titanis
461:Titanis
447:Titanis
419:Titanis
409:Titanis
382:phalanx
360:Florida
336:extinct
326:) is a
315:Titanis
272:Titanis
264:Genus:
228:Order:
218:Class:
146:↓
70:Blancan
60:-Early
52:Titanis
40:Titanic
5990:Chunga
5585:
5575:
5513:
5505:
5495:
5456:15 May
5444:
5436:
5418:
5371:15 May
5359:
5273:
5265:
5206:
5198:
5149:15 May
5137:
5129:
5075:
4996:15 May
4984:
4935:15 May
4846:15 May
4834:
4787:15 May
4775:
4726:
4634:26 May
4601:
4593:
4544:
4534:
4461:15 May
4449:
4407:
4397:
4327:
4319:
4280:
4270:
4226:
4143:15 May
4131:
4123:
4054:15 May
4002:15 May
3990:
3982:
3935:15 May
3923:
3915:
3822:15 May
3810:
3802:
3755:
3745:
3737:
3651:
3643:
3589:11 May
3573:: 36.
3534:
3526:
3461:11 May
3286:11 May
3228:15 May
3216:
3204:(50).
3094:
2934:
2881:11 May
2792:
2500:, and
2486:ursids
2432:, the
2420:, and
2414:shrews
2396:, and
2341:tapirs
2310:where
2229:et al.
2194:using
2176:and a
2098:marrow
2053:thorax
1974:, and
1972:sacral
1968:dorsal
1949:ungual
1883:culmen
1881:. The
1754:
1430:et al.
1127:et al.
974:, the
970:, the
653:. The
639:strata
573:equids
486:tapirs
482:equids
388:, and
320:Titans
6410:39470
6379:IRMNG
5511:S2CID
5442:S2CID
5416:eISSN
5204:S2CID
5135:S2CID
4599:S2CID
4325:S2CID
4224:S2CID
4129:S2CID
4048:(PDF)
4025:(PDF)
3988:S2CID
3921:JSTOR
3808:S2CID
3682:(PDF)
3671:(PDF)
3649:S2CID
3532:JSTOR
3214:JSTOR
2984:(PDF)
2969:(PDF)
2943:(PDF)
2932:S2CID
2912:(PDF)
2801:(PDF)
2790:JSTOR
2768:(PDF)
2725:(PDF)
2702:(PDF)
2641:(PDF)
2618:(PDF)
2559:ursid
2555:felid
2551:canid
2090:saiga
2061:hawks
1901:fossa
1836:Skull
1099:in a
643:rheas
601:avian
386:Texas
340:birds
328:genus
6366:GBIF
5700:Aves
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