596:
2723:
487:
2712:
2718:
142:
2729:
345:
2752:
961:
120:
1094:
515:
has a slender, flat, extremely elongated snout with many small teeth that lack meat-tearing serrations or cutting edges and are grooved, strongly recurved and flattened. From this, the scientists who initially described it concluded that this dinosaur was not a hunter of relatively large animals like
473:
is MPCA 238, a sacrum with a right pelvis and right hindlimb. The skull of the holotype was described in detail in 2017, while 2018 saw a slew of new papers on the anatomy of the genus. These include descriptions of new specimens, a study on the tail anatomy of the genus, and a general overview of
1002:, and unidentified dromaeosaur-like teeth from Australia. This discovery in the Southern Hemisphere helped scientists to clarify that the dromaeosaur family was more widely dispersed around the world than previously thought. Evidence indicates that dromaeosaurs first appeared during the
1194:
1061:
animals because they were more gracile and had modified metatarsals that are relatively thin and lengthened. Based on these adaptations, it is likely that unenlagiines preyed on small, fast animals, although the exact animals are unknown.
633:
has also been the subject of discussion among scientists as to the question whether flight could have evolved independently in birds and dromaeosaurids or was derived from some flying common ancestor. Some scientists propose that
1025:, since the species known from the Southern Hemisphere bear distinctive characteristics not shared by their northern relatives. La Buitrera also yielded remains of terrestrial crocodiles, pterosaurs, the largest known
1359:"Postcranial skeletal anatomy of the holotype and referred specimens of Buitreraptor gonzalezorum Makovicky, Apesteguía and Agnolín 2005 (Theropoda, Dromaeosauridae), from the Late Cretaceous of Patagonia"
644:, could fly. However, evidence for flight has not been unequivocally found in other dromaeosaurids, which has led some scientists to propose that dromaeosaurids evolved flight independently of birds if
551:
The body as a whole was also elongated, with a shallow ribcage. The enlarged sickle claw at the second toe of the foot formed a blade that was long although less large than in dromaeosaurids such as
1816:"Differential locomotor and predatory strategies of Gondwanan and derived Laurasian dromaeosaurids (Dinosauria, Theropoda, Paraves): Inferences from morphometric and comparative anatomical studies"
1078:
is characterized by its long forelimbs and hands; it likely relied on them to restrain prey and the curved claw of the second pedal digit would have injured or killed the victim.
2891:
1704:"The cranial osteology of Buitreraptor gonzalezorum Makovicky, ApesteguÍa, and AgnolÍn, 2005 (Theropoda, Dromaeosauridae), from the Late Cretaceous of Patagonia, Argentina"
1195:"The cranial osteology of Buitreraptor gonzalezorum Makovicky, ApesteguÍa, and AgnolÍn, 2005 (Theropoda, Dromaeosauridae), from the Late Cretaceous of Patagonia, Argentina"
1872:
1499:
1905:
2832:
2911:
1082:
probably swallowed its prey whole due to its lack of serrated teeth with flesh-tearing capabilities; the teeth functioned to simply hold prey.
1014:
broke up. However, other paleontologists have in later studies placed the time of origin for
Dromaeosauridae to about 160 million years ago.
2745:
1517:
1107:
373:
600:
461:
honours the González brothers, Fábian and Jorge, who realised much of the actual excavation and preparation of the fossils. The
381:
2722:
2711:
2906:
2901:
2896:
1898:
2728:
1757:
Novas, Fernando E.; Brissón Egli, Federico; Agnolin, Federico L.; Gianechini, Federico A.; Cerda, Ignacio (2018-03-01).
2717:
1253:
Novas, Fernando E.; Brissón Egli, Federico; Agnolin, Federico L; Gianechini, Federico A.; Cerda, Ignacio (2018-03-01).
141:
1494:
595:
415:, the "vulture roost". Although dinosaurs are rare in this site, another nearby site had earlier yielded the giant
1657:"Tail anatomy of Buitreraptor gonzalezorum (Theropoda, Unenlagiidae) and comparisons with other basal paravians"
1312:"Tail anatomy of Buitreraptor gonzalezorum (Theropoda, Unenlagiidae) and comparisons with other basal paravians"
655:
is based on the phylogenetic analysis conducted by
Hartman and colleagues in 2019, showing the relationships of
575:, of which fossils with preserved feathers are known. Since its close relatives had feathers, it is likely that
2002:
1891:
1057:), which were more stocky and had shorter legs and had an active predatory lifestyle. Unenlagiines were highly
1532:"A new paravian dinosaur from the Late Jurassic of North America supports a late acquisition of avian flight"
1017:
The scientists see it as an alternative possibility that dromaeosaurids originated on the ancient continent
458:
2772:
486:
369:
2886:
2858:
2755:
1010:, the scientists proposed that dromaeosaurids originated somewhere around 180 million years ago, before
1453:
from the
Cretaceous of Patagonia, Argentina, and the unusual dentition of the Gondwanan dromaeosaurids"
1049:
Unenlagiines had better capacities for running and pursuit predation than other dromaeosaurids such as
1758:
1656:
435:
2819:
2056:
1770:
1715:
1703:
1668:
1614:
1323:
1266:
1206:
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Period, when all the continents were much closer together than they are today. With the discovery of
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377:
319:
262:
128:
2473:
1584:
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2029:
1739:
1638:
1230:
1175:
136:
1759:"Postcranial osteology of a new specimen of Buitreraptor gonzalezorum (Theropoda, Unenlagiidae)"
1425:(Theropoda: Dromaeosauridae), from Patagonia, Argentina: new insights on the unenlagine teeth".
1255:"Postcranial osteology of a new specimen of Buitreraptor gonzalezorum (Theropoda, Unenlagiidae)"
2863:
2810:
528:
were long and ended in very long and thin three-fingered hands. All known parts of the hand of
2845:
2670:
2561:
2497:
2393:
2186:
1845:
1796:
1731:
1684:
1630:
1585:"Newly discovered birdlike dinosaur is oldest raptor ever found in South America: Relative of
1563:
1530:
Hartman, S.; Mortimer, M.; Wahl, W. R.; Lomax, D. R.; Lippincott, J.; Lovelace, D. M. (2019).
1390:
1339:
1292:
1222:
1167:
1071:
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579:
also was feathered. According to
Apesteguia, this is comparable to reconstructing an extinct
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2400:
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571:
344:
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2124:
2102:
2068:
1987:
1914:
1765:. New Insights on the Vertebrate Paleontology of the Neuquén Group, Patagonia, Argentina.
1663:. New Insights on the Vertebrate Paleontology of the Neuquén Group, Patagonia, Argentina.
1066:
features particular traits that can be attributed to specific hunting methods. Models for
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30:
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417:
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2439:
2424:
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2349:
2339:
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2196:
1642:
1512:
1311:
1254:
976:
827:
404:
304:
70:
1743:
1234:
1179:
1074:, which may explain the long-legged trait shared by various genera of Unenlagiidae.
2692:
2603:
2524:
2517:
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2385:
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2228:
2175:
2160:
1139:
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860:
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610:
540:
507:
327:
270:
238:
1782:
1727:
1702:
Gianechini, Federico A.; Makovicky, Peter J.; Apesteguía, Sebastián (2017-01-02).
1680:
1421:
Gianechini, F.A.; Apesteguía, S.; Makovicky, P.J (2009). "The unusual dentiton of
1335:
1278:
1218:
1193:
Gianechini, Federico A.; Makovicky, Peter J.; Apesteguía, Sebastián (2017-01-02).
505:
has some different physical features than typical northern dromaeosaurs, such as
2804:
2647:
2625:
2576:
2532:
2489:
2454:
2432:
2371:
2282:
2217:
2041:
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45:
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2014:
1962:
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336:. It was rooster-sized and had a very elongated head with many small teeth.
315:
307:
212:
153:
95:
39:
1849:
1655:
Motta, Matías J.; Brissón Egli, Federico; Novas, Fernando E. (2018-03-01).
1634:
1567:
1394:
1310:
Motta, Matías J.; Brissón Egli, Federico; Novas, Fernando E. (2018-03-01).
1171:
1469:
1448:
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2662:
2583:
2554:
2328:
2138:
1938:
1138:
Makovicky, Peter J.; Apesteguía, Sebastián; Agnolín, Federico L. (2005).
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173:
85:
80:
65:
60:
50:
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469:, consists of a partial skeleton with skull of an adult individual. The
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2685:
1971:
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1548:
1375:
1357:
Gianechini, F. A.; Makovicky, P. J.; Apesyeguía, S.; Cerda, I. (2018).
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614:
443:
100:
75:
1831:
1605:
troodontid theropod from China with long feathers on the metatarsus",
516:
some other dromaeosaurs, but rather a hunter of small animals such as
2260:
2152:
1932:
974:, the only other known dromaeosaurs from the southern continents are
580:
521:
517:
163:
2766:
1021:
in the north and during the
Cretaceous Period migrated to southern
625:
analysis by the describers showed it was part of the dromaeosaurid
501:
estimated the length at 1.5 metres, the weight at three kilograms.
1883:
959:
594:
544:, except for the ungual bones which are proportionally smaller in
485:
451:
428:
343:
2824:
2770:
1925:
1887:
438:. The genus name means "vulture raider", from the Spanish word
584:
1814:
Gianechini, F. A.; Ercoli, M. D.; Díaz-Martinez, I. (2020).
434:. It was named by Peter Makovicky, Sebastián Apesteguía and
559:. No fossil discoveries have been made of any feathers of
1447:
Gianechini, F.A.; Makovicky, P.J; Apesteguía, S. (2011).
1140:"The earliest dromaeosaurid theropod from South America"
1601:
Hu, D.; Hou, L.; Zhang, L. & Xu, X. (2009), "A pre-
1500:"New Birdlike Dino Adds to Debate on Origins of Flight"
599:
Reconstructed skeleton of the holotype MPCA 245 at the
411:
today. It was uncovered in a famous fossil site named
532:
are proportionally longer than in the dromaeosaurids
348:
Skeletal composite of specimens MPCA 245 and MPCA 238
16:
Dromaeosaurid dinosaur genus from the Late
Cretaceous
403:
ages approximately 98 to 97 million years ago, when
277:
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2013:
1986:
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1131:
1129:
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1125:
1123:
1248:
1246:
1244:
421:, one of the largest known carnivorous dinosaurs.
992:from South America (discovered earlier in 2005),
374:Fundacion Felix de Azara - Maimonides University
659:among the other genera assigned to the family "
1518:"Feathered flight, so good they did it twice?"
1899:
303:(meaning "La Buitrera seizer") is a genus of
8:
1072:traveling large distances in pursuit of prey
998:(once thought to be a true avian bird) from
1867:BBC News: Bird-like dinosaur forces rethink
2892:Late Cretaceous dinosaurs of South America
2767:
2416:
2130:
2119:
2046:
2019:
1992:
1983:
1922:
1906:
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118:
20:
1839:
1790:
1557:
1547:
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1384:
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1875:from the Natural History Museum, London.
1449:"The teeth of the unenlagiine theropod
1119:
617:traits. It was in 2005 assigned to the
1409:The Princeton Field Guide to Dinosaurs
497:was a rather small dinosaur. In 2010,
1442:
1440:
587:because all modern monkeys have fur.
7:
1879:National Science Foundation web site
563:. However, there are relatives like
1411:, Princeton University Press p. 139
852:
802:
795:
788:
738:
731:
724:
700:
676:
666:
1708:Journal of Vertebrate Paleontology
1199:Journal of Vertebrate Paleontology
1108:Timeline of dromaeosaurid research
14:
609:shows a mosaic of dromaeosaurid,
601:Carlos Ameghino Provincial Museum
427:is the only known species of the
2751:
2750:
2727:
2721:
2716:
2710:
1092:
140:
407:was an isolated continent like
372:, researcher of CONICET at the
380:, curator of dinosaurs at the
326:was described in 2005 and the
1:
2912:Fossil taxa described in 2005
1783:10.1016/j.cretres.2017.06.003
1728:10.1080/02724634.2017.1255639
1681:10.1016/j.cretres.2017.09.004
1589:rewrites evolutionary charts"
1457:Acta Palaeontologica Polonica
1336:10.1016/j.cretres.2017.09.004
1279:10.1016/j.cretres.2017.06.003
1219:10.1080/02724634.2017.1255639
368:during an excavation led by
2928:
1070:propose that it hunted by
2740:
2708:
2419:
2133:
2118:
2099:
2049:
2022:
1995:
1982:
1921:
1423:Buitreraptor gonzalezorum
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800:
793:
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743:
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722:
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681:
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425:Buitreraptor gonzalezorum
333:Buitreraptor gonzalezorum
282:Buitreraptor gonzalezorum
276:
269:
137:Scientific classification
135:
126:
117:
23:
1873:Drawing and some details
490:Size compared to a human
478:of multiple specimens.
382:Field Museum in Chicago
1037:turtles, mammals, and
967:
603:
491:
356:were found in 2004 in
349:
310:that lived during the
2859:Paleobiology Database
1470:10.4202/app.2009.0127
963:
598:
489:
347:
2907:Candeleros Formation
2902:Fossils of Argentina
2897:Cretaceous Argentina
393:Candeleros Formation
370:Sebastián Apesteguia
340:History of discovery
320:Candeleros Formation
129:Royal Ontario Museum
2474:Saurornitholestinae
1775:2018CrRes..83..127N
1763:Cretaceous Research
1720:2017JVPal..37E5639G
1673:2018CrRes..83..168M
1661:Cretaceous Research
1627:10.1038/nature08322
1619:2009Natur.461..640H
1495:National Geographic
1328:2018CrRes..83..168M
1316:Cretaceous Research
1271:2018CrRes..83..127N
1259:Cretaceous Research
1211:2017JVPal..37E5639G
1164:10.1038/nature03996
1156:2005Natur.437.1007M
1150:(7061): 1007–1011.
629:. The discovery of
524:. The forelimbs of
1820:Journal of Anatomy
1549:10.7717/peerj.7247
1407:Paul, G.S., 2010,
1376:10.7717/peerj.4558
968:
648:could indeed fly.
604:
492:
446:, in reference to
388:is from the early
352:Four specimens of
350:
131:, Toronto, Canada
127:Mounted skeleton,
2874:
2873:
2846:Open Tree of Life
2773:Taxon identifiers
2764:
2763:
2736:
2735:
2706:
2705:
2702:
2701:
2671:Saurornitholestes
2562:Saurornitholestes
2498:Saurornitholestes
2187:Halszkaraptorinae
2114:
2113:
2110:
2109:
2095:
2094:
2091:
2090:
2087:
2086:
1832:10.1111/joa.13153
1613:(7264): 640–643,
1029:, limbed snakes,
1027:rhynchocephalians
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2800:
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2595:Velociraptorinae
2541:Dromaeosauroides
2417:
2401:Zhongjianosaurus
2379:Sinornithosaurus
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965:Life restoration
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640:, a relative to
572:Sinornithosaurus
457:, "seizer". The
436:Federico Agnolín
395:, dating to the
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250:
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224:
145:
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42:
29:Temporal range:
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2655:Luanchuanraptor
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2509:Dromaeosaurinae
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2412:Eudromaeosauria
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2127:
2125:Dromaeosauridae
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2103:Dromaeosauridae
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2009:
2003:Avemetatarsalia
1988:Avemetatarsalia
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1714:(1): e1255639.
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619:Dromaeosauridae
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390:Late Cretaceous
378:Peter Makovicky
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312:Late Cretaceous
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31:Late Cretaceous
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2197:Halszkaraptor
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405:South America
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26:
22:
19:
2887:Unenlagiines
2811:Buitreraptor
2781:Buitreraptor
2780:
2715:
2693:Velociraptor
2691:
2684:
2677:
2669:
2661:
2653:
2646:
2639:
2632:
2624:
2616:
2609:
2604:Acheroraptor
2602:
2582:
2575:
2568:
2560:
2553:
2546:
2539:
2531:
2525:Dakotaraptor
2523:
2518:Achillobator
2516:
2496:
2488:
2483:Atrociraptor
2481:
2462:Zhenyuanlong
2460:
2453:
2447:Tianyuraptor
2445:
2438:
2431:
2423:
2399:
2392:
2386:Tianyuraptor
2384:
2377:
2370:
2362:
2355:
2348:
2327:
2319:
2311:
2304:
2296:
2288:
2281:
2273:
2266:
2259:
2253:Dakotaraptor
2251:
2246:Buitreraptor
2245:
2244:
2239:Austroraptor
2237:
2229:Unenlagiinae
2216:
2209:
2202:
2195:
2176:Zhenyuanlong
2174:
2166:
2161:Tianyuraptor
2159:
2151:
2144:
2137:
2101:
1967:
1958:
1949:
1823:
1819:
1809:
1766:
1762:
1752:
1711:
1707:
1697:
1664:
1660:
1650:
1610:
1606:
1602:
1596:
1587:Velociraptor
1586:
1580:
1576:
1539:
1535:
1525:
1511:
1507:
1493:
1489:
1480:11336/192712
1460:
1456:
1451:Buitreraptor
1450:
1430:
1426:
1422:
1416:
1408:
1403:
1366:
1362:
1352:
1319:
1315:
1305:
1262:
1258:
1202:
1198:
1188:
1147:
1143:
1080:Buitreraptor
1079:
1076:Buitreraptor
1075:
1068:Buitreraptor
1067:
1064:Buitreraptor
1063:
1048:
1045:Paleobiology
1016:
1008:Buitreraptor
1007:
993:
987:
983:Austroraptor
981:
975:
972:Buitreraptor
971:
969:
876:
875:
861:Dakotaraptor
859:
858:
826:
825:
809:
808:
762:
761:
745:
744:
709:Buitreraptor
708:
707:
706:
685:Austroraptor
683:
682:
671:Unenlagiidae
661:Unenlagiidae
657:Buitreraptor
656:
650:
645:
642:Buitreraptor
641:
635:
631:Buitreraptor
630:
627:Unenlagiinae
607:Buitreraptor
606:
605:
577:Buitreraptor
576:
570:
564:
561:Buitreraptor
560:
556:
553:Velociraptor
552:
550:
546:Buitreraptor
545:
541:Velociraptor
539:
533:
530:Buitreraptor
529:
526:Buitreraptor
525:
513:Buitreraptor
512:
508:Velociraptor
506:
503:Buitreraptor
502:
495:Buitreraptor
494:
493:
466:
454:
447:
439:
432:Buitreraptor
431:
424:
423:
416:
412:
386:Buitreraptor
385:
354:Buitreraptor
353:
351:
332:
331:
328:type species
324:Buitreraptor
323:
300:Buitreraptor
299:
298:
297:
288:
281:
280:
271:Type species
259:
253:Buitreraptor
252:
251:
239:Unenlagiinae
206:
193:
180:
25:Buitreraptor
24:
18:
2805:Wikispecies
2648:Linheraptor
2626:Deinonychus
2577:Yurgovuchia
2533:Deinonychus
2490:Bambiraptor
2455:Vectiraptor
2433:Bambiraptor
2372:Microraptor
2283:Pamparaptor
2218:Natovenator
2057:Maniraptora
2042:Maniraptora
1792:11336/48698
1769:: 127–167.
1667:: 168–181.
1581:EurekAlert!
1427:Ameghiniana
1322:: 168–181.
1288:11336/48698
1265:: 127–167.
970:Other than
764:Pamparaptor
566:Microraptor
557:Deinonychus
535:Deinonychus
482:Description
448:La Buitrera
413:La Buitrera
232:Subfamily:
38:98–97
2881:Categories
2744:See also:
2618:Boreonykus
2570:Utahraptor
2321:Variraptor
2290:Pyroraptor
2168:Variraptor
2146:Pyroraptor
2078:see below↓
1954:Dinosauria
1945:Sauropsida
1114:References
1000:Madagascar
747:Pyroraptor
611:troodontid
476:postcrania
465:specimen,
397:Cenomanian
287:Makovicky
258:Makovicky
200:Saurischia
187:Dinosauria
2611:Adasaurus
2306:Unenlagia
2298:Rahonavis
2204:Hulsanpes
2030:Theropoda
2015:Theropoda
1963:Theropoda
1931:Kingdom:
1801:0195-6671
1736:0272-4634
1689:0195-6671
1643:205218015
1542:: e7247.
1433:(4): 29R.
1369:: e4558.
1344:0195-6671
1297:0195-6671
1227:0272-4634
1059:cursorial
1051:Laurasian
1033:lizards,
995:Rahonavis
989:Unenlagia
956:Evolution
878:Unenlagia
811:Rahonavis
653:cladogram
646:Rahonavis
637:Rahonavis
623:cladistic
409:Australia
366:Argentina
362:Patagonia
358:sandstone
316:Argentina
308:dinosaurs
213:Theropoda
160:Kingdom:
154:Eukaryota
2790:Wikidata
2756:Category
2746:Timeline
2663:Nuthetes
2584:Zapsalis
2555:Itemirus
2329:Ypupiara
2211:Mahakala
2139:Daurlong
1939:Chordata
1937:Phylum:
1933:Animalia
1850:32023660
1744:89993518
1635:19794491
1568:31333906
1395:29607264
1235:89993518
1180:27078534
1172:16222297
1086:See also
1041:fishes
1031:iguanian
1023:Gondwana
1019:Laurasia
1004:Jurassic
471:paratype
467:MPCA 245
463:holotype
442:meaning
401:Turonian
219:Family:
174:Chordata
170:Phylum:
164:Animalia
150:Domain:
2851:4946074
2838:4966339
2825:4433545
2796:Q133137
2686:Tsaagan
1972:Paraves
1943:Class:
1841:7163733
1771:Bibcode
1716:Bibcode
1669:Bibcode
1615:Bibcode
1559:6626525
1386:5875404
1324:Bibcode
1267:Bibcode
1207:Bibcode
1152:Bibcode
1039:dipnoan
1012:Pangaea
615:avialan
522:mammals
518:lizards
444:vulture
318:at the
245:Genus:
107:↓
2425:Balaur
2394:Wulong
2261:Diuqin
2153:Shanag
1848:
1838:
1799:
1742:
1734:
1687:
1641:
1633:
1607:Nature
1566:
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