Knowledge (XXG)

Morrison Formation

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1285: 517: 500: 816: 544: 825: 1581: 1014: 130: 928: 446: 422: 410: 434: 398: 350: 482: 386: 338: 374: 852: 2436: 458: 362: 470: 1119: 987: 1567: 1304: 860: 833: 808: 1276:. The very diversity of the sauropods has raised some questions about how they could all co-exist. While their body shapes are very similar (long neck, long tail, huge elephant-like body), they are assumed to have had very different feeding strategies, in order for all to have existed in the same time frame and similar environment. 998:
Other informal or disused designations of the Morrison include the Stockett Bed in Montana, an unofficial sub-unit which contains bituminous coal; the outdated terms Casamero, Chavez, and Prewitt Sandstone for the Brushy Basin, Recapture, and Westwater Canyon, respectively; and the Bullington Member,
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Allan R. Kirk; Steven M. Condon (1986). "Structural Control of Sedimentation Patterns and the Distribution of Uranium Deposits in the Westwater Canyon Member of the Morrison Formation, Northwestern New Mexico--A Subsurface Study". In Turner-Peterson, C.E.; Santos, Elmer S.; Fishman, Neil S. (eds.).
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Westwater Canyon Member (AZ, CO, NM, UT): consists of sandstone interbedded with mudstone lenses and the occasional conglomerate component. Deposited in a braided-stream environment, high in organic matter. The term "Poison Canyon Sandstone" is informally applied to the upper sandstone sections of
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Mateus, O. 2006. Late Jurassic dinosaurs from the Morrison Formation, the Lourinhã and Alcobaça Formations (Portugal), and the Tendaguru Beds (Tanzania): a comparison. in Foster, J.R. and Lucas, S. G. R.M., eds., 2006, Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico
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Mateus, O. 2006. Late Jurassic dinosaurs from the Morrison Formation, the Lourinhã and Alcobaça Formations (Portugal), and the Tendaguru Beds (Tanzania): a comparison. in Foster, J.R. and Lucas, S. G. R.M., eds., 2006, Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico
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Ralston Creek Member (CO): formerly a considered separate formation and recently reclassified as the basal member of the Morrison in eastern Colorado. It appears analogous to the Tidwell and Salt Wash Members. This reclassification is supported by more detailed examination of the contacts and
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Brushy Basin Member (AZ, CO, NM, UT): conglomerate interbedded with mudstone; up to fifty percent by volume is made up of altered vitric ash, which originated as felsic ash falls. Deposition likely occurred in a fluvial-lacustrine environment, with the lacustrine component tending towards
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led an expedition from Princeton in 1939. During the Jurassic, the quarry was likely an ephemeral pond, where dinosaurs gathered and died due to severe drought. Their bodies were reworked by seasonal flooding events, which also added other partial carcasses from elsewhere.
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Saleiro, A., & Mateus O. (2017). Upper Jurassic bonebeds around Ten Sleep, Wyoming, USA: overview and stratigraphy. Abstract book of the XV Encuentro de Jóvenes Investigadores en Paleontología/XV Encontro de Jovens Investigadores em Paleontologia, Lisboa, 428 pp..
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Christine E. Turner-Peterson (1986). "Fluvial Sedimentology of a Major Uranium-Bearing Sandstone-- A Study of the Westwater Canyon Member of the Morrison Formation, San Juan Basin, New Mexico". In Turner-Peterson, C.E.; Santos, Elmer S.; Fishman, Neil S. (eds.).
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The Jurassic-Cretaceous boundary is seen where the red and purple beds of the Morrison Formation abruptly contact the drab, gray bed of the overlying Cedar Mountain Formation. The contact is the K1 unconformity. Jessie's Twist, southwest of Green River City,
1933:"The Jackpile Sandstone Member of the Morrison Formation in west-central New Mexicoby Donald E. jwen, Consulting Geologist, Tulsa, 0K 74152, and Lester J.Walters, Jr. and Ronald G. Beck, ARCO Oil and Gas Co., Dallas, IX75221 a formal definiti" 2581:
Foster, J.R. 2003. Paleoecological Analysis of the Vertebrate Fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain Region, U.S.A. Albuquerque, New Mexico: New Mexico Museum of Natural History and Science. Bulletin
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in 1951. The ore deposits in the rich Grants mineral belt are concentrated in sandstone beds of the Westwater Canyon Member and the Jackpile Member. Mines in this belt produced 340,000,000 pounds (150,000,000 kg) of
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Trujillo, K.C.; Chamberlain, K.R.; Strickland, A. (2006). "Oxfordian U/Pb ages from SHRIMP analysis for the Upper Jurassic Morrison Formation of southeastern Wyoming with implications for biostratigraphic correlations".
4601: 1398:, were actively worked by George Callison from California State University and the Los Angeles County Museum of Natural History. Numerous specimens of mammals, lizards, and crocodiles were found. Most recently, 3746: 1856:"Stratigraphic Sections of the Middle Jurassic Wanakah Formation, Cow Springs Sandstone, and adjacent rocks, from Bluff, Utah, to Lupton, Arizona: U.S. Geologic Survey Oil and Gas Investigation Chart, OC-131" 1498:, Wyoming: One of the most renowned fossil sites in North America. It was first worked by Cope and particularly Marsh in 1877 and has been the source of many different sauropods and non-dinosaur species. The 3213: 2717: 644:. Equivalent rocks under different names are found in Canada. It covers an area of 1.5 million square kilometers (600,000 square miles), although only a tiny fraction is exposed and accessible to 977:
Windy Hill Member (CO, SD, UT, WY): Formerly included as the upper member of the Sundance Formation, as, like the rest of the Sundance, it was deposited in marine settings; however, it is separated by an
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Jackpile Sandstone Member (NM): primarily a whitish crossbedded subarkose sandstone with a clay matrix. It is interbedded with variegated, pale-green to red, bentonitic mudstone lenses. However, recent
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Fiftymile Member (UT): Mainly present in the Kaiparowits basin, consisting of interbedded sandstone and mudstone, with minimal conglomerate. Locally, it is the uppermost member and has contact with the
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Unkpapa Sandstone Member (SD): occurs primarily in western South Dakota as a well-sorted, fine-grained sandstone, consisting primarily of quartz, with some feldspar inclusions. Locally overlain by the
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Fred Peterson. "Sand dunes, sabkhas, streams, and shallow seas: Jurassic paleogeography in the southern part of the Western Interior Basin". In Caputo, M.V.; Peterson, J.A.; Franczyk, K.J. (eds.).
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radiometric dating. The Ralston Creek contains conglomerate, sandstone, gypsum-mudstone, and gypsum-sandstone-mudstone facies; it is undetermined if the gypsum is of marine or lacustrine origin.
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Though many of the Morrison Formation fossils are fragmentary, they are sufficient to provide a good picture of the flora and fauna in the Morrison Basin during the Kimmeridgian. Overall, the
847:(AZ, CO, NM, UT): Well-sorted, light brown to white sandstone with large grains and components of chert. Interpreted as being deposited in an aeolian setting, at the edge of a dune field. 1217:
for dinosaurs and not just home to migratory, seasonal populations. However, the large body mass of the sauropods has been interpreted as an adaptation to migration in times of drought.
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Bell, Thomas, "Deposition and Diagenesis of the Brushy Basin Member and the Upper Part of the Westwater Canyon Member of the Morrison Formation, San Juan Basin, New Mexico," in
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The Morrison Formation is subdivided into several members, the occurrence of which are varied across the geographic extent of the Morrison. Members are (in alphabetical order):
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Szigeti, G.J; Fox, J.E. (1979). "Unkpapa Sandstone (Jurassic), Black Hills, South Dakota; an eolian facies of the Morrison Formation". In Ethridge, F.G.; Flores, R.M. (eds.).
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had recently split into the continents of North America and Eurasia, although they were still connected by land bridges. North America moved north and was passing through the
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and interfingers with the Morrison, meriting the nomenclature shift. Composed of limey, fossiliferous sandstone, generally interpreted to be deposited in a marine setting.
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is found in the Morrison Formation of Montana, which means that the northern part of the formation, along the shores of the sea, was wet and swampy, with more vegetation.
4738: 3732: 3199: 2703: 1362:, Colorado: A wide variety of fauna, as well as the most diverse set of dinosaurs from any Morrison Formation quarry. The first dig was in 1972, by researchers from 2457: 585:
and is light gray, greenish gray, or red. Most of the fossils occur in the green siltstone beds and lower sandstones, relics of the rivers and floodplains of the
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Bilbey, S.A. (1998). "Cleveland-Lloyd Dinosaur Quarry - age, stratigraphy and depositional environments". In Carpenter, K.; Chure, D.; Kirkland, J.I. (eds.).
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Daniel, J.A.; Bartholomew, M.J.; Murray, R.C. (1992). "Geological Characteristics of the Stockett Bed Coal in the Central Great Falls Coal Field, Montana".
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Mapel, W.J.; Chisholm, W.A. (1962). "Nonopaque heavy minerals in sandstone of Jurassic and Cretaceous age in the Black Hills, Wyoming and South Dakota".
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Type locality of the Salt Wash Member near White Wash, Grand County, Utah. The Morrison Formation is underlain by the brick-red Summerville Formation.
912:, representing a fluvial setting, interbedded with purely aeolian sandstone facies; in places, it also contains a large (up to nineteen percent) of 756:, a precursor event to later orogenic episodes that created the Rocky Mountains started pushing up to the west. The deposits from their east-facing 4888: 2661: 1444:
is by far the most common dinosaur at this site, making it a model organism for studies of paleobiology in basal theropods. The rare theropods
4594: 2481:"New data towards the development of a comprehensive taphonomic framework for the Late Jurassic Cleveland-Lloyd Dinosaur Quarry, Central Utah" 1466:
in 1909 with the purpose of finding sauropods from the Morrison Formation for public display. Monument also has fossilized dinosaurs from the
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Brushy Basin Member showing the purple and red colors of paleosols (ancient soils). East side of the San Rafael Swell, Emery County, Utah.
4883: 1974:"Implications of U-Pb ages of detrital zircons in Mesozoic strata of the Four Corners region for provenance relations in space and time" 684: 1463: 1231: 943:, it is the basal member of the Morrison. Mainly composed of siltstone, shale, and sandstone, and occasionally incorporates limestone 255: 4868: 4793: 752:
The Morrison Basin, which stretched from New Mexico in the south to Alberta and Saskatchewan in the north, was formed during the
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Jenkins, J.T. and J.L. Jenkins. 1993. Colorado's Dinosaurs. Denver, Colorado: Colorado Geologic Survey. Special Publication 35.
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History, sedimentology, and taphonomy of felch quarry 1 and associated sandbodies, Morrison Formation, Garden Park, Colorado.
652:. Over 75% is still buried under the prairie to the east, and much of its western paleogeographic extent was eroded during 516: 4773: 2042:"Redefining the Upper Jurassic Morrison Formation in Garden Park National Natural Landmark and vicinity, eastern Colorado" 886: 2578:
Foster, J. 2007. Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. 389pp.
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Reddish mudstones of the Tidwell Member underlying the whitish sandstones of the Saltwash Member, south of Cisco, Utah.
4768: 248: 2636: 4758: 4733: 1413: 1400: 3174: 2135:"The Morrison Formation of the Colorado Plateau: recent advances in sedimentology, stratigraphy, and paleotectonics" 4838: 4818: 4152: 3970: 3296: 1459: 1289: 135: 3985: 2614: 4878: 4833: 4813: 4788: 3386: 2993: 2479:
Peterson, Joseph E.; Warnock, Jonathan P.; Eberhart, Shawn L.; Clawson, Steven R.; Noto, Christopher R. (2017).
2083:"Revisions in nomenclature of the Middle Jurassic Wanakah Formation, Northwest New Mexico and northeast Arizona" 947:, along with thin beds of limestone. Depositional environments range from mudflats to fluvial, to evaporate and 4828: 4763: 4289: 4240: 4188: 4112: 3169: 2888: 1973: 1473: 1467: 1363: 157: 2903: 2200:"Stratigraphy and Nomenclature of Middle and Upper Jurassic rocks, western Colorado Plateau, Utah and Arizona" 1932: 3885: 3479: 970:
the member. The Westwater Canyon Member is the main source of uranium ore in the Morrison, especially in the
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Recapture Member (AZ, CO, NM, UT): forms the bottom of the Morrison across most of its range, overlying the
791:, or wind-deposited sandstones, are found in the southwestern part, which indicates it was much more arid—a 4337: 3890: 3875: 3540: 3356: 3276: 3102: 4317: 4162: 4097: 3960: 3438: 3433: 3147: 2898: 2632:
Paleobiology Database: Black Ridge Dinosaur Track Site (Morrison Formation): Late/Upper Jurassic, Colorado
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in Portugal. Throughout the western United States, it variously overlies the Middle Jurassic Summerville,
169: 4215: 3925: 3895: 3336: 3050: 2893: 2847: 2811: 2255:. Casper, WY: Society of Economic Paleontologists and Mineralogists Special Publication. p. 331-349. 1664:"Jurassic "savannah"-plant taphonomy and climate of the Morrison Formation (Upper Jurassic, Western USA)" 707:) at its base, to 146.8 ± 1 million years old at the top, which places it in the earliest 4704: 4434: 4132: 4117: 4087: 4020: 3406: 3281: 3137: 3122: 3065: 3008: 2918: 2883: 1344:
were discovered at the site, including the type specimens of the former two and the proposed neotype of
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Paleobiology Database: Dalton Well Dinosaur Track Site (Morrison Formation): Late/Upper Jurassic, Utah
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Smith, C.T. (1954). "Geology of the Thoreau quadrangle, McKinley and Valencia Counties, New Mexico".
1778: 1678: 1604: 1514: 653: 191: 4662: 3517: 3512: 3381: 4235: 4172: 4000: 3808: 3676: 3659: 3615: 3306: 3301: 3132: 1594: 1586: 1541: 1440: 1320: 1214: 719: 680: 183: 1896:"Revisions to Stratigraphic Nomenclature of Jurassic and Cretaceous Rocks of the Colorado Plateau" 1013: 129: 4060: 3915: 3848: 3699: 3633: 3522: 3376: 3331: 3152: 3142: 3060: 3055: 3040: 2976: 2913: 2870: 2852: 2816: 2684: 2418: 2286:. Society of Economic Paleontologists and Mineralogists, Rocky Mountain Section. p. 233-272. 1536: 1499: 1434: 959: 735: 700: 664: 535: 195: 161: 147: 2041: 824: 134:
The distinctive banding of the Morrison Formation, a group of rock layers that occur throughout
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Robertson, J.F. (1990). "Geologic map of the Thoreau quadrangle, McKinley County, New Mexico".
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were most likely riparian, as well. Hundreds of dinosaur fossils have been discovered, such as
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Bluish beds of the Brushy Basin Member containing alkali minerals deposited in Lake T'oo'dichi'
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Gypsiferous facies of the Ralston Creek Member exposed in a road cut, Fremont County, Colorado.
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during the Bone Wars in 1877, though most of the specimens were too incomplete to classify (
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from the Elko Highlands (along the borders of present-day Nevada and Utah) and deposited in
559: 187: 165: 2299:"Correlation and Nomenclature of some Triassic and Jurassic Rocks in south-central Wyoming" 1829: 4372: 4327: 4302: 4220: 4147: 4077: 4005: 3940: 3880: 3598: 3494: 3341: 3075: 2988: 2542:"Sandstone-hosted uranium deposits at the Cebolleta Land Grant, Cibola County, New Mexico" 1552: 1359: 1295:
Locations where significant Morrison Formation fossil discoveries have been made include:
1194: 844: 753: 657: 1804: 2398: 1782: 1682: 4634: 4307: 4272: 4025: 3643: 3628: 3580: 3532: 3461: 3311: 2862: 2507: 2480: 1764:"Reconstruction of the Upper Jurassic Morrison Formation extinct ecosystem—a synthesis" 971: 757: 287: 42: 2648: 1763: 1663: 4727: 4035: 3801: 3271: 3045: 2422: 1522:, including Dana Quarry from where at least 12 sauropods and theropods are recovered. 1446: 1433:, Utah: First excavated by geologists from the University of Utah in the late 1920s. 1356:
still in place, which confirmed that the dinosaur had two rows of plates on its back.
1242: 1178: 1162: 1150: 715: 556: 505: 330: 88: 38: 2383:"Taphonomy and Paleoecology of the Dinosaur Beds of the Jurassic Morrison Formation" 2298: 2269:
Basin Analysis Case Study: The Morrison Formation, Grants Uranium Region, New Mexico
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Basin Analysis Case Study: The Morrison Formation, Grants Uranium Region, New Mexico
2082: 3391: 3361: 3291: 2458:"The Late Jurassic Cleveland-Lloyd Dinosaur Quarry as a Drought-Induced Assemblage" 1855: 1452: 1333: 1254: 1236: 1188: 1183: 1156: 1138: 1112: 1028: 979: 780: 776: 708: 668: 649: 609: 605: 451: 427: 46: 17: 2653: 2381:
Dodson, Peter; Behrensmeyer, A. K.; Bakker, Robert T.; McIntosh, John S. (1980).
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era). Since at least some of these species are known to have nested in the area (
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or the main body of the Morrison, and overlies the Redwater Shale Member of the
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Recent and Ancient non marine depositional environments: models for exploration
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Fruita Paleontological Resource Area. One of the sites is denoted by the arrow.
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Type locality for the Morrison Formation above the town of Morrison, Colorado.
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found in the western United States which has been the most fertile source of
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A Basin Analysis Case Study: The Morrison Grants Uranium Region New Mexico
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Salt Wash Member (CO, UT): composed of fluvial sandstone, with occasional
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results have suggested that the Jackpile Sandstone Member is part of the
870: 742: 727: 621: 613: 597: 586: 570: 563: 439: 403: 355: 218: 103: 98: 83: 78: 68: 2169:"The base of the Upper Jurassic Morrison Formation in east-central Utah" 1931:
Owen, Donald E.; Walters, Lester J. Jr.; Beck, Ronald G. (August 1984).
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between 1948 and 2002. The uranium was precipitated by plant debris and
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Tidwell Member at the type section, Shadscale Mesa, Emery County, Utah.
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Fruita Paleontological Resource Area: Badlands sites located south of
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NPS.gov: "About the Morrison Formation in Dinosaur National Monument
1075:, living along the river flood plains. Along the rivers, there were 1283: 1117: 1060: 1048: 1040: 1012: 985: 926: 858: 850: 831: 823: 814: 806: 765: 761: 641: 625: 542: 515: 463: 367: 2008:"Jurassic stratigraphic nomenclature for northwestern New Mexico" 994:, formed from volcanic ash, characterizes the Brushy Basin Member 138:
and the source of fossils like those found at the Dinosaur Quarry
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Wilton, Ted; Chavez, William X. Jr.; Caldwell, Samantha (2020).
1315:: One of the three major sites excavated by the paleontologists 1213:
have been discovered), there are indications that it was a good
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deposits, including the Jackpile uranium body discovered near
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in the 1883-1886 Yale field seasons. In 1992, a specimen of
683:. In Colorado, New Mexico, and Utah, the Morrison Formation 675:, a fossil-collecting rivalry between early paleontologists 2589:
Museum of Natural History and Science Bulletin 36: 223-231.
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Museum of Natural History and Science Bulletin 36: 223-231.
1055:, the dominant plants of the time, were to be found with 2611:, Columbia University lecture on the Morrison Formation. 1462:, Utah: First excavated by Earl Douglas working for the 2600: 2330:
Montana Bureau of Mines and Geology Special Publication
1366:. Unique specimens include the longest dinosaur known, 2227: 2225: 2162: 2160: 1757: 1755: 1753: 1226:(most famously, the first nearly complete specimen of 783:, stretched through Canada down to the United States. 1981:
New Mexico Geological Society Field Conference Series
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Geological Society of America Abstracts with Programs
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in 1877. That same year, it became the center of the
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Workers inside the Dinosaur Quarry building, at the
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of the late Jurassic. This is similar in age to the
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The age and much of the fauna is similar to the 2549:New Mexico Geological Society Special Publication 2015:New Mexico Geological Society Special Publication 1926: 1924: 1762:Turner, Christine E.; Peterson, Fred (May 2004). 520:Stratotypes for members of the Morrison Formation 2349:New Mexico Bureau of Mines and Mineral Resources 951:. The Morrison as a whole resembles the Tidwell. 4809:Jurassic paleontological sites of North America 2621:Spatial distribution of Morrison in Macrostrat 2133:Peterson, Fred; Turner-Peterson, C.E. (1987). 939:(AZ, CO, NM, UT): in the northern part of the 4595: 3740: 3207: 2711: 2669: 1600:Lists of dinosaur-bearing stratigraphic units 908:Formations. Consists of clayey sandstone and 863:Brushy Basin Member on the Colorado Plateau 738:, Bell Ranch, Wanakah, and Stump Formations. 8: 1613:List of Paleobiota of the Morrison Formation 1220:Sauropods that have been discovered include 1023:List of dinosaurs of the Morrison Formation 27:Rock formation in the western United States 4677: 4639: 4630: 4621: 4610:Precambrian chronostratigraphy of Colorado 4602: 4588: 4580: 4519: 4467: 4458: 4409: 4356: 4277: 4268: 4177: 4049: 4040: 3836: 3797: 3788: 3779: 3768: 3747: 3733: 3725: 3648: 3603: 3576: 3457: 3255: 3246: 3235: 3214: 3200: 3192: 2965: 2956: 2835: 2799: 2790: 2759: 2750: 2739: 2718: 2704: 2696: 2676: 2662: 2654: 2649:Britannica.com: Morrison Formation geology 1456:specimens were also first discovered here. 128: 29: 4784:Sandstone formations of the United States 4779:Limestone formations of the United States 2506: 2496: 2435:Evanoff, E., & Carpenter, K. (1998). 2303:U.S. Geological Survey Professional Paper 2057: 1506:strata are also exposed at this location. 4739:Geologic formations of the United States 3755:Paleozoic chronostratigraphy of Colorado 1302: 1071:. Much of the fossilized vegetation was 3222:Mesozoic chronostratigraphy of Colorado 2726:Cenozoic chronostratigraphy of Colorado 1629: 1198:, most notably a very broad range of 7: 2081:Condon, S.M.; Huffman, A.C. (1988). 1618:Uranium mining and the Navajo people 1240:(the most commonly found sauropod), 1009:Paleobiota of the Morrison Formation 768:lowlands, lakes, river channels and 569:in North America. It is composed of 1170:comprising at least two species of 999:which has been discarded entirely. 741:At the time, the supercontinent of 1232:Carnegie Museum of Natural History 1051:), the flora was quite different. 25: 4844:Jurassic formations of New Mexico 2617:, from the National Park Service. 2608:Dinosaurs and the History of Life 2046:Geology of the Intermountain West 772:, became the Morrison Formation. 4859:Jurassic geology of South Dakota 4744:Jurassic System of North America 1579: 1565: 1531:The Morrison Formation contains 1234:, in Pittsburgh, Pennsylvania), 1230:, which is now exhibited at the 498: 480: 468: 456: 444: 432: 420: 408: 396: 384: 372: 360: 348: 336: 3175:Independence Mountain Formation 2601:Morrison Natural History Museum 2234:U.S. Geological Survey Bulletin 2204:U.S. Geological Survey Bulletin 2173:U.S. Geological Survey Bulletin 2087:U.S. Geological Survey Bulletin 1903:U.S. Geological Survey Bulletin 1555:that acted as reducing agents. 1431:Cleveland-Lloyd Dinosaur Quarry 4889:Geology of the Rocky Mountains 1: 4153:Morgan Round Valley Formation 1502:from the Cretaceous and some 1410:were described from the area. 887:detrital zircon geochronology 722:Formation in Germany and the 555:is a distinctive sequence of 4854:Jurassic geology of Oklahoma 3986:South Canyon Creek Formation 1791:10.1016/j.sedgeo.2004.01.009 1691:10.1016/j.sedgeo.2004.01.004 288:Approximate paleocoordinates 4874:Jurassic geology of Wyoming 4749:Late Jurassic North America 1830:"Geologic Unit: Windy Hill" 1414:Purgatoire River track site 1401:Fruitafossor windscheffelia 4905: 4884:Dinosaur National Monument 3971:Sangre de Cristo Formation 2994:Central Colorado Volcanics 2006:Cather, Steven M. (2020). 1460:Dinosaur National Monument 1290:Dinosaur National Monument 1020: 1006: 136:Dinosaur National Monument 4579: 4290:Williams Canyon Formation 4196: 4189:Williams Canyon Formation 4113:Jacque Mountain Formation 3724: 3387:Pictured Cliffs Formation 3191: 3170:Gravel Mountain Formation 2695: 2407:10.1017/s009483730000676x 2297:Pipiringos, G.N. (1968). 2167:O'Sullivan, R.B. (1984). 1805:"Geologic Unit: Morrison" 1035:but, since there were no 990:"Popcorn" texture due to 760:, carried by streams and 127: 37: 4869:Jurassic geology of Utah 4241:Ste. Genevieve Formation 2904:Martins Canyon Formation 2889:Cedar Mountain Formation 1862:. U.S. Geological Survey 1474:Hanksville-Burpee Quarry 1468:Cedar Mountain Formation 1364:Brigham Young University 1352:was discovered with its 158:Cedar Mountain Formation 4794:Shallow marine deposits 3886:Council Grove Formation 3480:Ralston Creek Formation 3417:Williams Fork Formation 3397:Point Lookout Formation 3071:Poison Canyon Formation 2198:Peterson, Fred (1988). 1894:Peterson, Fred (1988). 1511:Wyoming Dinosaur Center 1176:and the slightly older 4799:Jurassic fossil record 4754:Jurassic United States 4211:Headscrabble Formation 4093:Eagle Valley Evaporite 3991:Stone Corral Formation 3434:Burro Canyon Formation 3031:Blanco Basin Formation 2941:Grouse Mountain Basalt 2929:Wagon Tongue Formation 2368:U.S. Geological Survey 2059:10.31711/giw.v6.pp1-30 1308: 1292: 1123: 1031:was dry, similar to a 1018: 995: 932: 891:Burro Canyon Formation 864: 856: 845:Bluff Sandstone Member 837: 829: 821: 812: 779:, an extension of the 548: 521: 170:Burro Canyon Formation 4849:Jurassic North Dakota 4705:Uncompahgre Formation 4338:Pinyon Park Formation 4118:Kansas City Formation 3891:Crestone Conglomerate 3876:Cedar Hills Formation 3541:Glen Canyon Formation 3357:Lion Canyon Formation 3282:Cliff House Sandstone 3277:Castle Gate Formation 3123:Middle Park Formation 3103:Arapahoe Conglomerate 3066:Green River Formation 2919:Troublesome Formation 2884:Browns Park Formation 1608:(with link directory) 1404:and the new dinosaur 1317:Othniel Charles Marsh 1313:Garden Park, Colorado 1306: 1287: 1121: 1016: 989: 930: 862: 854: 835: 827: 818: 810: 677:Othniel Charles Marsh 546: 519: 180:Summerville Formation 4774:Siltstone formations 4651:Uinta Mountain Group 4318:Kinderhook Formation 4163:Sharpsdale Formation 4098:Glen Eyrie Formation 4011:Wellington Formation 3966:Phosphoria Formation 3961:Owl Canyon Formation 3951:Minnekahta Formation 3439:Horsetooth Formation 3148:South Park Formation 3128:Nacimiento Formation 3118:Fort Union Formation 2909:North Park Formation 2899:Los Pintos Formation 1952:10.58799/NMG-v6n3.45 1638:"Morrison Formation" 1605:List of fossil sites 1346:Allosaurus fragilis, 916:feldspar inclusions. 620:, the panhandles of 192:Bell Ranch Formation 4769:Mudstone formations 4236:St. Louis Formation 4216:Leadville Formation 4001:Wabaunsee Formation 3926:Ingleside Formation 3896:Day Creek Formation 3809:Chugwater Formation 3677:Chugwater Formation 3660:Chugwater Formation 3616:Chugwater Formation 3337:Kremmling Formation 3307:Fruitland Formation 3302:Fox Hills Formation 3297:Fort Hays Limestone 3133:Ojo Alamo Formation 3051:Echo Park Formation 2894:Flat Tops Volcanics 2848:Dry Union Formation 2812:Dry Union Formation 2399:1980Pbio....6..208D 1783:2004SedG..167..309T 1771:Sedimentary Geology 1683:2004SedG..167..137P 1671:Sedimentary Geology 1595:Chugwater Formation 1587:Paleontology portal 1441:Allosaurus fragilis 1350:Stegosaurus stenops 1321:Edward Drinker Cope 1202:(the giants of the 747:subtropical regions 724:Tendaguru Formation 720:Solnhofen Limestone 681:Edward Drinker Cope 663:It was named after 600:, with outcrops in 306: /  267: /  184:Beclabito Formation 39:Stratigraphic range 18:Brushy Basin Member 4759:Kimmeridgian Stage 4734:Morrison Formation 4435:Arbuckle Formation 4133:Marmaton Formation 4088:Cherokee Formation 4061:Fountain Formation 4021:Wolfcamp Formation 3916:Glorieta Formation 3849:Fountain Formation 3700:Moenkopi Formation 3634:Moenkopi Formation 3523:Sundance Formation 3475:Morrison Formation 3407:Trinidad Formation 3377:Niobrara Formation 3332:Kirtland Formation 3153:Washakie Formation 3143:San Jose Formation 3138:Raton Conglomerate 3061:Huerfano Formation 3056:Farisita Formation 3009:Pinnacle Formation 2977:Arikaree Formation 2914:Santa Fe Formation 2871:Arikaree Formation 2853:Ogallala Formation 2817:Ogallala Formation 2685:Chronostratigraphy 2498:10.7717/peerj.3368 1940:New Mexico Geology 1537:Grants, New Mexico 1500:Cloverly Formation 1435:William Lee Stokes 1385:on the continent, 1381:, and the largest 1309: 1293: 1280:Sites and quarries 1124: 1019: 996: 960:Sundance Formation 933: 865: 857: 838: 830: 822: 813: 775:In the north, the 732:Lourinhã Formation 701:radiometric dating 685:was a major source 665:Morrison, Colorado 592:It is centered in 553:Morrison Formation 549: 536:Morrison, Colorado 522: 271:39.651°N 105.188°W 196:Sundance Formation 162:Cloverly Formation 148:Geologic formation 33:Morrison Formation 4839:Jurassic Nebraska 4819:Jurassic Colorado 4721: 4720: 4717: 4716: 4713: 4712: 4700: 4699: 4696: 4695: 4689:Owiyukuts Complex 4658: 4657: 4575: 4574: 4571: 4570: 4567: 4566: 4549: 4548: 4545: 4544: 4537:Sawatch Formation 4509: 4508: 4501:Sawatch Formation 4479:Dotsero Formation 4448: 4447: 4440:Manitou Formation 4430: 4429: 4422:Dotsero Formation 4395:Simpson Formation 4390:Harding Sandstone 4368:Fremont Limestone 4346: 4345: 4333:Parting Formation 4323:Misener Formation 4298: 4297: 4258: 4257: 4254: 4253: 4231:Spergen Formation 4143:Minturn Formation 4108:Hermosa Formation 4073: 4072: 4016:White Horse Group 3981:Shawnee Formation 3976:Satanka Formation 3936:Lansing Formation 3921:Hermosa Formation 3906:Forelle Formation 3866: 3865: 3862: 3861: 3826: 3825: 3720: 3719: 3716: 3715: 3712: 3711: 3708: 3707: 3695: 3694: 3624: 3623: 3564: 3563: 3556:Wingate Sandstone 3546:Kayenta Formation 3508:Entrada Formation 3485:Wanakah Formation 3447: 3446: 3412:Vermejo Formation 3367:Menefee Formation 3347:Laramie Formation 3322:Hygiene Formation 3187: 3186: 3183: 3182: 3165: 3164: 3161: 3160: 3108:Bridger Formation 3081:Wasatch Formation 3036:Cuchara Formation 3004:Conejos Formation 2999:Chadron Formation 2984: 2983: 2937: 2936: 2879: 2878: 2825: 2824: 2780: 2779: 2772:Alamosa Formation 1490:Bone Cabin Quarry 1267:Haplocanthosaurus 541: 540: 56:156.3–146.8  16:(Redirected from 4896: 4879:Colorado Plateau 4834:Jurassic Montana 4814:Jurassic Arizona 4789:Fluvial deposits 4678: 4640: 4631: 4622: 4604: 4597: 4590: 4581: 4559:Tintic Formation 4554:Reagan Formation 4532:Lodore Formation 4520: 4496:Lodore Formation 4468: 4459: 4410: 4357: 4313:Elbert Formation 4278: 4269: 4246:Warsaw Formation 4206:Gilman Formation 4201:Beulah Formation 4178: 4158:Morrow Formation 4138:Maroon Formation 4123:Kerber Formation 4103:Gothic Formation 4083:Belden Formation 4066:Madera Formation 4050: 4041: 3996:Sumner Formation 3956:Opeche Formation 3946:Maroon Formation 3931:Kaibab Limestone 3911:Glendo Formation 3901:Falcon Formation 3871:Blaine Formation 3854:Madera Formation 3837: 3819:Taloga Formation 3814:Lykins Formation 3798: 3789: 3780: 3775: 3769: 3764: 3749: 3742: 3735: 3726: 3687:Taloga Formation 3682:Lykins Formation 3649: 3604: 3589:Chinle Formation 3577: 3572: 3551:Navajo Formation 3503:Carmel Formation 3470:Curtis Formation 3458: 3402:Smoky Hill Chalk 3287:Codell Sandstone 3267:Benton Formation 3256: 3247: 3242: 3236: 3231: 3216: 3209: 3202: 3193: 3113:Denver Formation 3098:Animas Formation 2966: 2957: 2952: 2836: 2800: 2791: 2760: 2751: 2746: 2740: 2735: 2720: 2713: 2706: 2697: 2678: 2671: 2664: 2655: 2565: 2564: 2562: 2560: 2546: 2537: 2531: 2527: 2521: 2520: 2510: 2500: 2476: 2470: 2469: 2467: 2465: 2453: 2447: 2433: 2427: 2426: 2378: 2372: 2371: 2363: 2357: 2356: 2344: 2338: 2337: 2325: 2319: 2318: 2316: 2314: 2294: 2288: 2287: 2279: 2273: 2272: 2263: 2257: 2256: 2248: 2242: 2241: 2229: 2220: 2219: 2217: 2215: 2195: 2189: 2188: 2186: 2184: 2164: 2155: 2154: 2152: 2150: 2130: 2124: 2123: 2114: 2103: 2102: 2100: 2098: 2078: 2072: 2071: 2061: 2037: 2031: 2030: 2028: 2026: 2012: 2003: 1997: 1996: 1994: 1992: 1978: 1969: 1963: 1962: 1960: 1958: 1937: 1928: 1919: 1918: 1916: 1914: 1900: 1891: 1885: 1878: 1872: 1871: 1869: 1867: 1851: 1845: 1844: 1842: 1840: 1826: 1820: 1819: 1817: 1815: 1801: 1795: 1794: 1777:(3–4): 309–355. 1768: 1759: 1748: 1744: 1738: 1737: 1721: 1715: 1714: 1701: 1695: 1694: 1677:(3–4): 137–162. 1668: 1659: 1653: 1652: 1650: 1648: 1642: 1634: 1589: 1584: 1583: 1582: 1575: 1573:Dinosaurs portal 1570: 1569: 1568: 1527:Economic geology 1182:, and the early 1069:horsetail rushes 956:Lakota Formation 941:Colorado Plateau 879:Dakota Formation 695:Geologic history 560:sedimentary rock 504: 502: 501: 486: 484: 483: 474: 472: 471: 462: 460: 459: 450: 448: 447: 438: 436: 435: 426: 424: 423: 414: 412: 411: 402: 400: 399: 390: 388: 387: 378: 376: 375: 366: 364: 363: 354: 352: 351: 342: 340: 339: 321: 320: 318: 317: 316: 311: 307: 304: 303: 302: 299: 282: 281: 279: 278: 277: 276:39.651; -105.188 272: 268: 265: 264: 263: 260: 188:Curtis Formation 166:Lakota Formation 132: 123: 60: 30: 21: 4904: 4903: 4899: 4898: 4897: 4895: 4894: 4893: 4829:Jurassic Kansas 4764:Tithonian Stage 4724: 4723: 4722: 4709: 4692: 4667: 4654: 4611: 4608: 4563: 4541: 4505: 4482: 4444: 4426: 4399: 4376: 4373:Viola Formation 4342: 4328:Ouray Formation 4303:Aneth Formation 4294: 4250: 4226:Osage Formation 4221:Molas Formation 4192: 4167: 4148:Molas Formation 4128:Keyes Formation 4078:Atoka Formation 4069: 4030: 4006:Weber Formation 3941:Lyons Formation 3881:Chase Formation 3858: 3822: 3773: 3762: 3756: 3753: 3704: 3691: 3663: 3638: 3620: 3593: 3570: 3560: 3527: 3489: 3443: 3420: 3352:Lewis Formation 3342:Lance Formation 3317:Greenhorn Shale 3240: 3229: 3223: 3220: 3179: 3157: 3084: 3076:Uinta Formation 3018: 3014:Pitch Formation 2989:Brule Formation 2980: 2950: 2944: 2933: 2924:Trump Formation 2875: 2857: 2821: 2776: 2744: 2733: 2727: 2724: 2691: 2682: 2597: 2592: 2574: 2572:Further reading 2569: 2568: 2558: 2556: 2544: 2539: 2538: 2534: 2528: 2524: 2478: 2477: 2473: 2463: 2461: 2455: 2454: 2450: 2434: 2430: 2380: 2379: 2375: 2365: 2364: 2360: 2346: 2345: 2341: 2327: 2326: 2322: 2312: 2310: 2296: 2295: 2291: 2281: 2280: 2276: 2265: 2264: 2260: 2250: 2249: 2245: 2231: 2230: 2223: 2213: 2211: 2197: 2196: 2192: 2182: 2180: 2166: 2165: 2158: 2148: 2146: 2132: 2131: 2127: 2116: 2115: 2106: 2096: 2094: 2080: 2079: 2075: 2039: 2038: 2034: 2024: 2022: 2010: 2005: 2004: 2000: 1990: 1988: 1976: 1971: 1970: 1966: 1956: 1954: 1935: 1930: 1929: 1922: 1912: 1910: 1898: 1893: 1892: 1888: 1879: 1875: 1865: 1863: 1853: 1852: 1848: 1838: 1836: 1828: 1827: 1823: 1813: 1811: 1803: 1802: 1798: 1766: 1761: 1760: 1751: 1745: 1741: 1723: 1722: 1718: 1703: 1702: 1698: 1666: 1661: 1660: 1656: 1646: 1644: 1640: 1636: 1635: 1631: 1626: 1585: 1580: 1578: 1571: 1566: 1564: 1561: 1549: 1545: 1529: 1486: 1464:Carnegie Museum 1427: 1360:Dry Mesa Quarry 1301: 1282: 1264:, the uncommon 1195:Gargoyleosaurus 1025: 1011: 1005: 805: 758:drainage basins 754:Nevadan orogeny 697: 658:Rocky Mountains 650:paleontologists 499: 497: 481: 479: 478: 469: 467: 466: 457: 455: 454: 445: 443: 442: 433: 431: 430: 421: 419: 418: 409: 407: 406: 397: 395: 394: 385: 383: 382: 373: 371: 370: 361: 359: 358: 349: 347: 346: 337: 335: 334: 314: 312: 308: 305: 300: 297: 295: 293: 292: 275: 273: 269: 266: 261: 258: 256: 254: 253: 139: 122: 121: 116: 111: 106: 101: 96: 91: 86: 81: 76: 71: 66: 55: 54: 28: 23: 22: 15: 12: 11: 5: 4902: 4900: 4892: 4891: 4886: 4881: 4876: 4871: 4866: 4864:Jurassic Texas 4861: 4856: 4851: 4846: 4841: 4836: 4831: 4826: 4824:Jurassic Idaho 4821: 4816: 4811: 4806: 4801: 4796: 4791: 4786: 4781: 4776: 4771: 4766: 4761: 4756: 4751: 4746: 4741: 4736: 4726: 4725: 4719: 4718: 4715: 4714: 4711: 4710: 4708: 4707: 4701: 4698: 4697: 4694: 4693: 4691: 4686: 4684: 4675: 4669: 4668: 4666: 4665: 4663:Tava Formation 4659: 4656: 4655: 4653: 4648: 4646: 4637: 4628: 4619: 4613: 4612: 4609: 4607: 4606: 4599: 4592: 4584: 4577: 4576: 4573: 4572: 4569: 4568: 4565: 4564: 4562: 4561: 4556: 4550: 4547: 4546: 4543: 4542: 4540: 4539: 4534: 4528: 4526: 4517: 4511: 4510: 4507: 4506: 4504: 4503: 4498: 4492: 4490: 4484: 4483: 4481: 4476: 4474: 4465: 4456: 4450: 4449: 4446: 4445: 4443: 4442: 4437: 4431: 4428: 4427: 4425: 4424: 4418: 4416: 4407: 4401: 4400: 4398: 4397: 4392: 4386: 4384: 4378: 4377: 4375: 4370: 4365: 4363: 4354: 4348: 4347: 4344: 4343: 4341: 4340: 4335: 4330: 4325: 4320: 4315: 4310: 4308:Dyer Formation 4305: 4299: 4296: 4295: 4293: 4292: 4286: 4284: 4275: 4266: 4260: 4259: 4256: 4255: 4252: 4251: 4249: 4248: 4243: 4238: 4233: 4228: 4223: 4218: 4213: 4208: 4203: 4197: 4194: 4193: 4191: 4186: 4184: 4175: 4169: 4168: 4166: 4165: 4160: 4155: 4150: 4145: 4140: 4135: 4130: 4125: 4120: 4115: 4110: 4105: 4100: 4095: 4090: 4085: 4080: 4074: 4071: 4070: 4068: 4063: 4058: 4056: 4047: 4038: 4032: 4031: 4029: 4028: 4026:Yeso Formation 4023: 4018: 4013: 4008: 4003: 3998: 3993: 3988: 3983: 3978: 3973: 3968: 3963: 3958: 3953: 3948: 3943: 3938: 3933: 3928: 3923: 3918: 3913: 3908: 3903: 3898: 3893: 3888: 3883: 3878: 3873: 3867: 3864: 3863: 3860: 3859: 3857: 3856: 3851: 3845: 3843: 3834: 3828: 3827: 3824: 3823: 3821: 3816: 3811: 3806: 3804: 3795: 3786: 3777: 3766: 3758: 3757: 3754: 3752: 3751: 3744: 3737: 3729: 3722: 3721: 3718: 3717: 3714: 3713: 3710: 3709: 3706: 3705: 3703: 3702: 3696: 3693: 3692: 3690: 3689: 3684: 3679: 3673: 3671: 3665: 3664: 3662: 3657: 3655: 3646: 3640: 3639: 3637: 3636: 3631: 3629:Jelm Formation 3625: 3622: 3621: 3619: 3618: 3612: 3610: 3601: 3595: 3594: 3592: 3591: 3585: 3583: 3574: 3566: 3565: 3562: 3561: 3559: 3558: 3553: 3548: 3543: 3537: 3535: 3529: 3528: 3526: 3525: 3520: 3518:Page Formation 3515: 3513:Garo Formation 3510: 3505: 3499: 3497: 3491: 3490: 3488: 3487: 3482: 3477: 3472: 3466: 3464: 3455: 3449: 3448: 3445: 3444: 3442: 3441: 3436: 3430: 3428: 3422: 3421: 3419: 3414: 3409: 3404: 3399: 3394: 3389: 3384: 3382:Pando Porphyry 3379: 3374: 3369: 3364: 3359: 3354: 3349: 3344: 3339: 3334: 3329: 3324: 3319: 3314: 3312:Graneros Shale 3309: 3304: 3299: 3294: 3289: 3284: 3279: 3274: 3269: 3264: 3262: 3253: 3244: 3233: 3225: 3224: 3221: 3219: 3218: 3211: 3204: 3196: 3189: 3188: 3185: 3184: 3181: 3180: 3178: 3177: 3172: 3166: 3163: 3162: 3159: 3158: 3156: 3155: 3150: 3145: 3140: 3135: 3130: 3125: 3120: 3115: 3110: 3105: 3100: 3094: 3092: 3086: 3085: 3083: 3078: 3073: 3068: 3063: 3058: 3053: 3048: 3043: 3038: 3033: 3028: 3026: 3020: 3019: 3017: 3016: 3011: 3006: 3001: 2996: 2991: 2985: 2982: 2981: 2979: 2974: 2972: 2963: 2954: 2946: 2945: 2943: 2938: 2935: 2934: 2932: 2931: 2926: 2921: 2916: 2911: 2906: 2901: 2896: 2891: 2886: 2880: 2877: 2876: 2874: 2873: 2867: 2865: 2859: 2858: 2856: 2855: 2850: 2844: 2842: 2833: 2827: 2826: 2823: 2822: 2820: 2819: 2814: 2808: 2806: 2797: 2788: 2782: 2781: 2778: 2777: 2775: 2774: 2768: 2766: 2757: 2748: 2737: 2729: 2728: 2725: 2723: 2722: 2715: 2708: 2700: 2693: 2692: 2683: 2681: 2680: 2673: 2666: 2658: 2652: 2651: 2646: 2639: 2634: 2629: 2624: 2618: 2612: 2604: 2596: 2595:External links 2593: 2591: 2590: 2586: 2583: 2579: 2575: 2573: 2570: 2567: 2566: 2532: 2522: 2471: 2456:Gates, Terry. 2448: 2440:Modern Geology 2428: 2393:(2): 208–232. 2373: 2358: 2339: 2320: 2289: 2274: 2258: 2243: 2221: 2190: 2156: 2125: 2104: 2073: 2032: 1998: 1964: 1920: 1886: 1873: 1846: 1821: 1796: 1749: 1739: 1716: 1696: 1654: 1628: 1627: 1625: 1622: 1621: 1620: 1615: 1610: 1602: 1597: 1591: 1590: 1576: 1560: 1557: 1547: 1543: 1528: 1525: 1524: 1523: 1517: 1507: 1493: 1485: 1482: 1481: 1480: 1471: 1457: 1426: 1423: 1422: 1421: 1411: 1392: 1357: 1300: 1297: 1281: 1278: 1021:Main article: 1007:Main article: 1004: 1003:Fossil content 1001: 984: 983: 975: 972:San Juan Basin 967: 952: 937:Tidwell Member 925: 924: 917: 898: 894: 882: 874: 849: 848: 804: 801: 696: 693: 557:Upper Jurassic 539: 538: 533: 529: 528: 524: 523: 513: 509: 508: 495: 491: 490: 327: 323: 322: 290: 284: 283: 251: 245: 244: 240: 239: 226: 222: 221: 216: 212: 211: 207: 206: 203: 199: 198: 177: 173: 172: 155: 151: 150: 145: 141: 140: 133: 125: 124: 117: 112: 107: 102: 97: 92: 87: 82: 77: 72: 67: 62: 61: 43:Upper Jurassic 35: 34: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4901: 4890: 4887: 4885: 4882: 4880: 4877: 4875: 4872: 4870: 4867: 4865: 4862: 4860: 4857: 4855: 4852: 4850: 4847: 4845: 4842: 4840: 4837: 4835: 4832: 4830: 4827: 4825: 4822: 4820: 4817: 4815: 4812: 4810: 4807: 4805: 4802: 4800: 4797: 4795: 4792: 4790: 4787: 4785: 4782: 4780: 4777: 4775: 4772: 4770: 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3261: 3257: 3254: 3252: 3248: 3245: 3243: 3237: 3234: 3232: 3226: 3217: 3212: 3210: 3205: 3203: 3198: 3197: 3194: 3190: 3176: 3173: 3171: 3168: 3167: 3154: 3151: 3149: 3146: 3144: 3141: 3139: 3136: 3134: 3131: 3129: 3126: 3124: 3121: 3119: 3116: 3114: 3111: 3109: 3106: 3104: 3101: 3099: 3096: 3095: 3093: 3091: 3087: 3082: 3079: 3077: 3074: 3072: 3069: 3067: 3064: 3062: 3059: 3057: 3054: 3052: 3049: 3047: 3046:Dawson Arkose 3044: 3042: 3039: 3037: 3034: 3032: 3029: 3027: 3025: 3021: 3015: 3012: 3010: 3007: 3005: 3002: 3000: 2997: 2995: 2992: 2990: 2987: 2986: 2978: 2975: 2973: 2971: 2967: 2964: 2962: 2958: 2955: 2953: 2947: 2942: 2939: 2930: 2927: 2925: 2922: 2920: 2917: 2915: 2912: 2910: 2907: 2905: 2902: 2900: 2897: 2895: 2892: 2890: 2887: 2885: 2882: 2881: 2872: 2869: 2868: 2866: 2864: 2860: 2854: 2851: 2849: 2846: 2845: 2843: 2841: 2837: 2834: 2832: 2828: 2818: 2815: 2813: 2810: 2809: 2807: 2805: 2801: 2798: 2796: 2792: 2789: 2787: 2783: 2773: 2770: 2769: 2767: 2765: 2761: 2758: 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1975: 1968: 1965: 1953: 1949: 1945: 1941: 1934: 1927: 1925: 1921: 1908: 1904: 1897: 1890: 1887: 1883: 1877: 1874: 1861: 1857: 1854:Condon, S.M. 1850: 1847: 1835: 1831: 1825: 1822: 1810: 1806: 1800: 1797: 1792: 1788: 1784: 1780: 1776: 1772: 1765: 1758: 1756: 1754: 1750: 1743: 1740: 1735: 1731: 1727: 1720: 1717: 1712: 1708: 1700: 1697: 1692: 1688: 1684: 1680: 1676: 1672: 1665: 1658: 1655: 1639: 1633: 1630: 1623: 1619: 1616: 1614: 1611: 1609: 1606: 1603: 1601: 1598: 1596: 1593: 1592: 1588: 1577: 1574: 1563: 1558: 1556: 1554: 1550: 1538: 1534: 1526: 1521: 1518: 1516: 1512: 1508: 1505: 1501: 1497: 1494: 1491: 1488: 1487: 1483: 1479: 1475: 1472: 1469: 1465: 1461: 1458: 1455: 1454: 1449: 1448: 1447:Stokesosaurus 1443: 1442: 1436: 1432: 1429: 1428: 1424: 1419: 1415: 1412: 1409: 1408: 1403: 1402: 1397: 1393: 1390: 1389: 1384: 1380: 1379: 1375: 1371: 1370: 1365: 1361: 1358: 1355: 1351: 1347: 1343: 1342: 1337: 1335: 1331: 1326: 1322: 1318: 1314: 1311: 1310: 1305: 1298: 1296: 1291: 1286: 1279: 1277: 1275: 1274: 1269: 1268: 1263: 1262: 1257: 1256: 1251: 1250: 1245: 1244: 1243:Brachiosaurus 1239: 1238: 1233: 1229: 1225: 1224: 1218: 1216: 1212: 1209: 1205: 1201: 1197: 1196: 1191: 1190: 1185: 1181: 1180: 1179:Hesperosaurus 1175: 1174: 1169: 1165: 1164: 1163:Ornitholestes 1159: 1158: 1153: 1152: 1151:Saurophaganax 1147: 1146: 1141: 1140: 1135: 1134: 1129: 1120: 1116: 1114: 1110: 1106: 1102: 1098: 1094: 1090: 1086: 1082: 1078: 1074: 1070: 1066: 1062: 1058: 1054: 1050: 1046: 1042: 1038: 1034: 1030: 1024: 1015: 1010: 1002: 1000: 993: 988: 981: 976: 973: 968: 965: 961: 957: 953: 950: 946: 942: 938: 935: 934: 929: 922: 921:conglomeratic 918: 915: 911: 907: 903: 899: 895: 892: 888: 883: 880: 875: 872: 867: 866: 861: 853: 846: 843: 842: 841: 834: 826: 817: 809: 802: 800: 798: 794: 790: 786: 782: 778: 773: 771: 767: 763: 759: 755: 750: 748: 744: 739: 737: 733: 729: 725: 721: 717: 714: 710: 706: 702: 699:According to 694: 692: 690: 686: 682: 678: 674: 670: 666: 661: 659: 655: 651: 647: 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Retrieved 2552: 2548: 2535: 2525: 2488: 2484: 2474: 2462:. Retrieved 2451: 2443: 2439: 2431: 2390: 2387:Paleobiology 2386: 2376: 2367: 2361: 2352: 2348: 2342: 2333: 2329: 2323: 2311:. Retrieved 2306: 2302: 2292: 2283: 2277: 2268: 2261: 2252: 2246: 2237: 2233: 2212:. Retrieved 2207: 2203: 2193: 2181:. Retrieved 2176: 2172: 2147:. Retrieved 2142: 2138: 2128: 2119: 2095:. Retrieved 2090: 2086: 2076: 2049: 2045: 2035: 2023:. Retrieved 2018: 2014: 2001: 1989:. Retrieved 1984: 1980: 1967: 1955:. Retrieved 1943: 1939: 1913:December 31, 1911:. Retrieved 1906: 1902: 1889: 1881: 1876: 1866:December 31, 1864:. Retrieved 1859: 1849: 1839:December 30, 1837:. Retrieved 1833: 1824: 1814:December 30, 1812:. Retrieved 1808: 1799: 1774: 1770: 1742: 1725: 1719: 1710: 1706: 1699: 1674: 1670: 1657: 1645:. Retrieved 1632: 1607: 1530: 1453:Marshosaurus 1451: 1445: 1439: 1418:Otero County 1405: 1399: 1386: 1376: 1367: 1349: 1345: 1339: 1334:Ceratosaurus 1328: 1325:nomina dubia 1324: 1294: 1271: 1265: 1259: 1255:Brontosaurus 1253: 1247: 1241: 1237:Camarasaurus 1235: 1227: 1221: 1219: 1208:Camptosaurus 1207: 1193: 1189:Mymoorapelta 1187: 1177: 1171: 1161: 1157:Camptosaurus 1155: 1149: 1143: 1139:Ceratosaurus 1137: 1131: 1125: 1113:mammaliforms 1026: 997: 980:unconformity 936: 839: 803:Stratigraphy 795:, with sand 781:Arctic Ocean 777:Sundance Sea 774: 751: 740: 711:, and early 709:Kimmeridgian 698: 669:Arthur Lakes 662: 610:South Dakota 606:North Dakota 591: 552: 550: 527:Type section 452:South Dakota 428:North Dakota 47:Kimmeridgian 4414:Tremadocian 4182:Tournaisian 3372:Mowry Shale 3327:Juana Lopez 3041:D2 Sequence 2764:Pleistocene 1860:USGS Geolex 1834:USGS Geolex 1809:USGS Geolex 1515:Thermopolis 1388:Torvosaurus 1378:Ultrasauros 1369:Supersaurus 1330:Stegosaurus 1273:Supersaurus 1249:Apatosaurus 1228:D. carnegii 1215:environment 1184:ankylosaurs 1173:Stegosaurus 1145:Torvosaurus 1085:salamanders 1047:, and some 1037:angiosperms 964:Black Hills 923:tendencies. 770:floodplains 315:40.4; -53.2 313: / 274: / 262:105°11′17″W 249:Coordinates 205:Up to 200 m 4728:Categories 4524:Guzhangian 3832:Cisuralian 2863:Aquitanian 2603:home page. 2559:27 October 2446:, 423-170. 2336:: 145-157. 2313:8 February 2240:(C): 1-59. 2214:9 February 2210:(B): 13-56 2183:8 February 2149:8 February 2097:8 February 2025:31 October 1991:27 October 1909:(B): 13-56 1496:Como Bluff 1478:Hanksville 1407:Fruitadens 1341:Allosaurus 1261:Barosaurus 1223:Diplodocus 1168:stegosaurs 1166:, several 1133:Allosaurus 1101:pterosaurs 1093:crocodiles 1065:tree ferns 949:lacustrine 914:orthoclase 654:exhumation 646:geologists 630:New Mexico 416:New Mexico 259:39°39′04″N 4463:Furongian 4282:Famennian 3793:Lopingian 3653:Olenekian 3090:Paleocene 2961:Oligocene 2840:Messinian 2491:: e3368. 2460:. PALAIOS 2423:130686856 2415:0094-8373 2309:(D): 1-26 2145:(1): 1-18 2093:(A): 1-12 2068:2380-7601 2021:: 145–151 1987:: 135–146 1734:0026-7775 1624:Citations 1520:Ten Sleep 1492:, Wyoming 1383:carnivore 1200:sauropods 1128:dinosaurs 992:bentonite 910:claystone 713:Tithonian 673:Bone Wars 583:limestone 579:siltstone 575:sandstone 532:Named for 237:limestone 233:siltstone 229:Sandstone 210:Lithology 202:Thickness 154:Underlies 51:Tithonian 4682:Siderian 4515:Series 3 4472:Stage 10 4054:Gzhelian 3841:Asselian 2970:Chattian 2804:Zanclean 2795:Pliocene 2689:Colorado 2530:357-361. 2517:28603668 2052:: 1–30. 1559:See also 1504:Triassic 1374:chimeric 1299:Colorado 1211:embryoes 1204:Mesozoic 1105:crayfish 1073:riparian 1053:Conifers 743:Laurasia 736:Sundance 728:Tanzania 622:Oklahoma 614:Nebraska 598:Colorado 589:period. 587:Jurassic 571:mudstone 564:dinosaur 440:Oklahoma 404:Nebraska 356:Colorado 329:Central 243:Location 219:Mudstone 176:Overlies 4488:Paibian 3608:Anisian 2831:Miocene 2555:: 67–75 2508:5463971 2464:19 June 2395:Bibcode 1779:Bibcode 1713:(6): 7. 1679:Bibcode 1533:uranium 1484:Wyoming 1097:turtles 1089:lizards 1057:ginkgos 1045:flowers 1041:grasses 1033:savanna 1029:climate 966:region. 906:Wanakah 902:Entrada 789:Aeolian 689:uranium 656:of the 634:Arizona 602:Montana 594:Wyoming 567:fossils 494:Country 488:Wyoming 392:Montana 344:Arizona 301:53°12′W 298:40°24′N 215:Primary 4644:Tonian 4382:Middle 3669:Induan 3599:Middle 3495:Middle 3024:Eocene 2515:  2505:  2421:  2413:  2139:Hunter 2066:  1957:4 June 1732:  1647:25 May 1643:. CGKN 1553:humate 1396:Fruita 1372:, the 1111:, and 1067:, and 1061:cycads 945:clasts 871:playas 793:desert 766:swampy 762:rivers 716:stages 640:, and 618:Kansas 581:, and 512:Extent 503:  485:  473:  461:  449:  437:  425:  413:  401:  389:  380:Kansas 377:  365:  353:  341:  326:Region 4405:Lower 4361:Upper 4273:Upper 3644:Lower 3581:Upper 3533:Lower 3462:Upper 3426:Lower 3260:Upper 2545:(PDF) 2485:PeerJ 2419:S2CID 2011:(PDF) 1977:(PDF) 1946:(3). 1936:(PDF) 1899:(PDF) 1767:(PDF) 1667:(PDF) 1641:(PDF) 1354:armor 1109:clams 1081:frogs 1049:trees 820:Utah. 797:dunes 691:ore. 642:Idaho 626:Texas 464:Texas 368:Idaho 225:Other 2561:2020 2513:PMID 2466:2024 2411:ISSN 2315:2021 2238:1161 2216:2021 2208:1633 2185:2021 2179:: 17 2177:1561 2151:2021 2099:2021 2091:1633 2064:ISSN 2027:2020 1993:2020 1959:2020 1915:2020 1907:1633 1868:2020 1841:2020 1816:2020 1730:ISSN 1649:2013 1509:The 1450:and 1425:Utah 1338:and 1319:and 1270:and 1192:and 1126:The 1077:fish 904:and 785:Coal 679:and 648:and 638:Utah 624:and 596:and 551:The 476:Utah 144:Type 64:PreꞒ 2687:of 2582:23. 2503:PMC 2493:doi 2403:doi 2334:102 2307:594 2054:doi 1948:doi 1787:doi 1775:167 1687:doi 1675:167 726:in 687:of 53:), 49:to 4730:: 4617:pЄ 3774:Pz 3763:Ph 3571:Tr 3241:Mz 3230:Ph 2951:Pe 2745:Cz 2734:Ph 2553:14 2551:. 2547:. 2511:. 2501:. 2487:. 2483:. 2444:22 2442:, 2417:. 2409:. 2401:. 2389:. 2385:. 2353:31 2351:. 2332:. 2305:. 2301:. 2236:. 2224:^ 2206:. 2202:. 2175:. 2171:. 2159:^ 2141:. 2137:. 2107:^ 2089:. 2085:. 2062:. 2048:. 2044:. 2019:14 2017:. 2013:. 1985:61 1983:. 1979:. 1942:. 1938:. 1923:^ 1905:. 1901:. 1858:. 1832:. 1807:. 1785:. 1773:. 1769:. 1752:^ 1711:38 1709:. 1685:. 1673:. 1669:. 1513:, 1476:, 1416:, 1332:, 1258:, 1252:, 1246:, 1186:, 1160:, 1154:, 1148:, 1142:, 1136:, 1115:. 1107:, 1103:, 1099:, 1095:, 1091:, 1087:, 1083:, 1079:, 1063:, 1059:, 1043:, 799:. 749:. 705:Ma 660:. 636:, 632:, 628:, 616:, 612:, 608:, 604:, 577:, 573:, 333:: 235:, 231:, 194:, 190:, 186:, 182:, 168:, 164:, 160:, 114:Pg 58:Ma 41:: 4673:X 4635:Z 4626:♇ 4603:e 4596:t 4589:v 4454:Є 4352:O 4264:D 4173:M 4045:⁋ 4036:C 3784:P 3748:e 3741:t 3734:v 3453:J 3251:K 3215:e 3208:t 3201:v 2786:N 2755:Q 2719:e 2712:t 2705:v 2677:e 2670:t 2663:v 2623:. 2563:. 2519:. 2495:: 2489:5 2468:. 2425:. 2405:: 2397:: 2391:6 2370:. 2355:. 2317:. 2218:. 2187:. 2153:. 2143:2 2101:. 2070:. 2056:: 2050:6 2029:. 1995:. 1961:. 1950:: 1944:6 1917:. 1870:. 1843:. 1818:. 1793:. 1789:: 1781:: 1736:. 1693:. 1689:: 1681:: 1651:. 1548:8 1546:O 1544:3 1542:U 1470:. 1420:. 1391:. 1336:, 1039:( 974:. 893:. 881:. 873:. 119:N 109:K 104:J 99:T 94:P 89:C 84:D 79:S 74:O 69:Ꞓ 45:( 20:)

Index

Brushy Basin Member
Stratigraphic range
Upper Jurassic
Kimmeridgian
Tithonian
Ma
PreꞒ

O
S
D
C
P
T
J
K
Pg
N

Dinosaur National Monument
Geologic formation
Cedar Mountain Formation
Cloverly Formation
Lakota Formation
Burro Canyon Formation
Summerville Formation
Beclabito Formation
Curtis Formation
Bell Ranch Formation
Sundance Formation

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