Cow Island (USNM 5814): Middle Campanian - Late Campanian, Montana
collected by J. B. Hatcher 1888
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Ornithomimidae
|
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|
Ornithomimus tenuis n. sp.
Marsh 1890
|
1 individual | |||||||||
| USNM 5814 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Blaine |
| Coordinates: | 47.8° North, 108.9° West (view map) | ||||
| Paleocoordinates: | 54.7° North, 75.1° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Middle Campanian - Late Campanian | ||
| Age range of interval: | 83.6 - 72.1 m.y. ago |
Stratigraphy
| Geological group: | Montana | Formation: | Judith River | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 1500-1600 feet below top of formation, 500-600 feet below level of Ceratops | |||||
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: | medium |
| Associated major elements: | all |
| Fragmentation: | frequent |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | selective quarrying,surface (float),surface (in situ),mechanical,field collection,survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | J. B. Hatcher | Collection dates: | 1888 |
Metadata
| Database number: | 49001 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-04-05 11:46:50 | Last modified: | 2016-05-18 15:35:46 |
| Access level: | the public | Released: | 2005-04-05 11:46:50 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 12250. | ETE | O. C. Marsh. 1890. Description of new dinosaurian reptiles. The American Journal of Science, series 3 39:81-86 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 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] |
| 13071 | ETE | H. F. Osborn. 1916. Skeletal adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus. Bulletin of the American Museum of Natural History 35(43):733-771 [M. Carrano/M. Carrano/M. Carrano] |