Alkali Creek (USNM): Late/Upper Maastrichtian, Wyoming
collected by J. B. Hatcher & Sullins 1891
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Tyrannosauridae
|
||||||||||
|
Tyrannosaurus rex
Osborn 1905
|
Gilmore 1920 | 1 specimen | ||||||||
| USNM 8064, ilium | ||||||||||
|
Reptilia
- Ornithomimidae
|
||||||||||
|
Ornithomimus sedens n. sp.
Marsh 1892
|
1 individual | |||||||||
| nomen dubium belonging to Ornithomimus | ||||||||||
| USNM 4736 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Niobrara |
| Coordinates: | 43.1° North, 104.1° West (view map) | ||||
| Paleocoordinates: | 49.5° North, 78.9° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Altitude: | 1195 meters | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Late/Upper Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Lance |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | excellent |
| Associated major elements: | all |
| Fragmentation: | occasional |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection,survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | J. B. Hatcher & Sullins | Collection dates: | 1891 |
Metadata
| Database number: | 52871 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-08-25 07:09:48 | Last modified: | 2022-06-08 16:23:34 |
| Access level: | the public | Released: | 2005-08-25 07:09:48 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 9095. | O. C. Marsh. 1892. Notice of new reptiles from the Laramie Formation. American Journal of Science 43:449-453 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 17876 | ETE | B. H. Breithaupt, E. H. Southwell, and N. A. Matthews. 2006. Dynamosaurus imperiosus and the earliest discoveries of Tyrannosaurus rex in Wyoming and the West. In S. G. Lucas and R. M. Sullivan (eds.), Late Cretaceous Vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin 35:257-258 [M. Carrano/M. Carrano] |
| 81845 | K. L. Derstler. 1994. Dinosaurs of the Lance Formation in eastern Wyoming. In G. E. Nelson (ed.), Wyoming Geological Association Forty-Fourth Annual Field Conference. Wyoming Geological Association Guidebook 44:127-146 [M. Carrano/M. Carrano] | |
| 10608 | ETE | C. W. Gilmore. 1920. Osteology of the carnivorous Dinosauria in the United States National Museum, with special reference to the genera Antrodemus (Allosaurus) and Ceratosaurus. Bulletin of the United States National Museum 110:1-154 [M. Carrano/M. Carrano/M. Carrano] |
| 17477 | ETE | R. E. Molnar. 1991. The cranial morphology of Tyrannosaurus rex. Palaeontographica Abteilung A 217(4-6):137-176 [M. Carrano/M. Carrano] |