Quarry 1, Como Bluff (YPM): Kimmeridgian - Tithonian, Wyoming
collected by W. Reed, W. Carlin, & S. Williston 1877–1878, 1887
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
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Mammalia indet.
Linnaeus 1758
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Ostrom and McIntosh 1999 | 1 specimen | ||||||||
tooth | ||||||||||
Mammalia
- Dryolestidae
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Dryolestes sp.
Marsh 1878
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Breithaupt 1990 | 1 specimen | ||||||||
jaw | ||||||||||
Reptilia
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Creosaurus atrox n. gen., n. sp.
Marsh 1878
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Marsh 1878 | 2 individuals | ||||||||
synonym of Allosaurus fragilis | ||||||||||
YPM 1890 | ||||||||||
Reptilia
- Camarasauridae
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Apatosaurus grandis n. sp.
Marsh 1877
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3 specimens | |||||||||
recombined as Camarasaurus grandis | ||||||||||
YPM 1901, 1903, 1905 (5 measurements) | ||||||||||
Morosaurus robustus n. sp.
Marsh 1878
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Marsh 1878 | 1 individual | ||||||||
synonym of Camarasaurus grandis | ||||||||||
YPM 1902 | ||||||||||
Pleurocoelus montanus n. sp.
Marsh 1896
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Marsh 1896 | 1 individual | ||||||||
synonym of Camarasaurus grandis | ||||||||||
YPM 1908 | ||||||||||
Morosaurus impar n. gen., n. sp.
Marsh 1878
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Marsh 1878 | 1 specimen | ||||||||
synonym of Camarasaurus grandis | ||||||||||
YPM 1900 | ||||||||||
Reptilia
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Diplodocus sp.
Marsh 1878
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Ostrom and McIntosh 1999 | 1 individual | ||||||||
see common names |
Geography
Country: | United States | State/province: | Wyoming | County: | Albany |
Coordinates: | 41.9° North, 106.0° West (view map) | ||||
Paleocoordinates: | 37.5° North, 52.2° West | ||||
Basis of coordinate: | stated in text | ||||
Altitude: | 7000 feet | ||||
Geographic resolution: | small collection |
Time
Period: | Jurassic | Epoch: | Late/Upper Jurassic |
*Period: | Late/Upper Jurassic | *Epoch: | Malm |
*International age/stage: | Kimmeridgian - Tithonian | ||
Key time interval: | Kimmeridgian - Tithonian | ||
Age range of interval: | 157.30000 - 145.00000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Morrison | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: referred to in paper as "Atlantosaurus Beds" and "Como Beds"; upper middle part of formation |
Lithology and environment
Primary lithology: | claystone |
Includes fossils? | Y |
Environment: | wet floodplain |
Geology comments: poorly drained floodplain |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Preservation of anatomical detail: | good |
Associated major elements: | some |
Disassociated major elements: | many |
Fragmentation: | occasional |
Collection methods and comments
Collection methods: | selective quarrying,mechanical,field collection | ||
Reason for describing collection: | general faunal/floral analysis | ||
Museum repositories: | YPM | ||
Collectors: | W. Reed, W. Carlin, & S. Williston | Collection dates: | 1877–1878, 1887 |
Metadata
Also known as: | WY-21 | ||
Database number: | 13212 | ||
Authorizer: | M. Carrano | Enterer: | M. Carrano |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2002-01-29 12:55:06 | Last modified: | 2023-11-21 16:41:43 |
Access level: | the public | Released: | 2002-01-29 12:55:06 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
7811. | O. C. Marsh. 1877. Notice of new dinosaurian reptiles from the Jurassic formation. American Journal of Science and Arts 14:514-516 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
77734 | B. H. Breithaupt. 1990. Biography of William Harlow Reed: the story of a frontier fossil collector. Earth Sciences History 9(1):6-13 [M. Carrano/M. Carrano] | |
14211 | ETE | K. Carpenter and J. McIntosh. 1994. Upper Jurassic sauropod babies from the Morrison Formation. In K. Carpenter, K. F. Hirsch, and J. R. Horner (eds.), Dinosaur Eggs and Babies 265-278 [M. Carrano/M. Carrano/M. Carrano] |
15179 | ETE | J. R. Foster. 2003. Paleoecological analysis of the vertebrate fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain region, U.S.A. New Mexico Museum of Natural History and Science Bulletin 23:1-95 [M. Carrano/M. Carrano] |
19565 | ETE | J. R. Foster. 2005. New juvenile sauropod material from western Colorado, and the record of juvenile sauropods from the Upper Jurassic Morrison Formation. In K. Carpenter and V. Tidwell (eds.), Thunder-Lizards: The Sauropodomorph Dinosaurs. Indiana University Press, Bloomington 141-153 [M. Carrano/M. Carrano/M. Carrano] |
12748 | ETE | P. M. Galton. 1981. A juvenile stegosaurian dinosaur, "Astrodon pusillus," from the Upper Jurassic of Portugal, with comments on Upper Jurassic and Lower Cretaceous biogeography. Journal of Vertebrate Paleontology 1(3-4):245-256 [M. Carrano/M. Carrano/M. Carrano] |
52132 | T. Ikejiri. 2005. Distribution and biochronology of Camarasaurus (Dinosauria, Sauropoda) from the Jurassic Morrison Formation of the Rocky Mountain region. In S. G. Lucas, K. E. Ziegler, V. W. Lueth, D. E. Owen (eds.), New Mexico Geological Society, 56th Field Conference, Geology of the Chama Basin. New Mexico Geological Society Guidebook 56:367-379 [M. Carrano/M. Carrano/P. Wagner] | |
86556 | R. Lei, E. Tschopp, C. Hendrickx, M. J. Wedel, M. A. Norell and D. W. E. Hone. 2023. Bite and tooth marks on sauropod dinosaurs from the Morrison Formation. PeerJ 11:16327:1-34 [M. Carrano/M. Carrano] | |
7813 | O. C. Marsh. 1878. Notice of new dinosaurian reptiles. American Journal of Science and Arts 15:241-244 [M. Carrano/M. Carrano/M. Carrano] | |
7803 | O. C. Marsh. 1878. Principal characters of American Jurassic dinosaurs. Part I. American Journal of Science and Arts 16:411-416 [M. Carrano/M. Carrano/M. Carrano] | |
14074 | ETE | O. C. Marsh. 1896. The dinosaurs of North America. United States Geological Survey, 16th Annual Report, 1894-95 55:133-244 [M. Carrano/M. Carrano/M. Carrano] |
46207 | J. S. McIntosh. 1981. Annotated catalogue of the dinosaurs (Reptilia, Archosauria) in the collections of the Carnegie Museum of Natural History. Bulletin of Carnegie Museum of Natural History 18:1-67 [M. Carrano/M. Carrano/M. Carrano] | |
69430 | R. L. Moodie. 1930. The Dinosaurs of Wyoming 22:1-119 [M. Carrano/M. Carrano] | |
10618 | J. H. Ostrom and J. S. McIntosh. 1999. Marsh's Dinosaurs: The Collections from Como Bluff. Yale University Press, New Haven 1-388 [M. Carrano/M. Carrano/M. Carrano] | |
13281 | ETE | C. E. Turner and F. Peterson. 1999. Biostratigraphy of dinosaurs in the Upper Jurassic Morrison Formation of the Western Interior, U.S.A. In D. D. Gillette (ed.), Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:77-114 [M. Carrano/M. Carrano/M. Carrano] |
4387 | 5% 37840 | S. W. Williston. 1901. The dinosaurian genus Creosaurus, Marsh. American Journal of Science, series 4 11(11):111-114 [M. Carrano/M. Carrano/J. Alroy] |