Big Dry Quarry: Maastrichtian, Montana
collected by B. Brown 1908
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Predentata indet.
Marsh 1894
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Goodwin et al. 1998 | 1 individual | ||||||||
| AMNH 21541 (field no. 5) | ||||||||||
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= Stygimoloch spinifer
Galton and Sues 1983
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Goodwin et al. 1998 | |||||||||
| synonym of Pachycephalosaurus wyomingensis | ||||||||||
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Reptilia
- Tyrannosauridae
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Tyrannosaurus rex
Osborn 1905
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1 individual | |||||||||
| AMNH 5029 (field no. 6) (=CM 9379) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Garfield |
| Coordinates: | 48.0° North, 106.5° West (view map) | ||||
| Paleocoordinates: | 54.8° North, 78.7° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Hell Creek | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 30 m above Fox Hills Sandstone | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Associated major elements: | all |
| Fragmentation: | occasional |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | AMNH,CM | ||
| Collectors: | B. Brown | Collection dates: | 10 Aug 1908 |
| Collection method comments: collected August 10, 1908 by Barnum Brown | |||
Metadata
| Also known as: | Big Dry Creek, Big Dry West | ||
| Database number: | 48848 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-03-31 08:14:09 | Last modified: | 2015-01-16 11:15:57 |
| Access level: | the public | Released: | 2005-03-31 08:14:09 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 54064. | H. F. Osborn. 1909. Extinct mammals, birds, reptiles and fishes. Fortieth Annual Report of the American Museum of Natural History for the Year 1908 30-32 [M. Carrano/M. Carrano] |
Secondary references:
| 13015 | ETE | M. B. Goodwin, E. A. Buccholtz, and R. E. Johnson. 1998. Cranial anatomy and diagnosis of Stygimoloch spinifer (Ornithischia: Pachycephalosauria) with comments on cranial display structures in agonistic behavior. Journal of Vertebrate Paleontology 18(2):363-375 [M. Carrano/M. Carrano/M. Carrano] |
| 51846 | W. K. Gregory. 1910. The Tyrannosaurus. The American Museum Journal 10:2-8 [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] | |
| 17477 | ETE | R. E. Molnar. 1991. The cranial morphology of Tyrannosaurus rex. Palaeontographica Abteilung A 217(4-6):137-176 [M. Carrano/M. Carrano] |
| 12386 | ETE | H. F. Osborn. 1912. Crania of Tyrannosaurus and Allosaurus. Memoirs of the American Museum of Natural History. New Series 1(1):1-30 [M. Carrano/M. Carrano/M. Carrano] |