Bear Creek/Rock Creek (UMMP): Late/Upper Maastrichtian, Montana
collected by E. C. Case, W. H. Buettner, & J. A. Wilson 1938
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Hadrosauridae
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Anatosaurus sp.
Lull and Wright 1942
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1 individual | |||||||||
| synonym of Edmontosaurus | ||||||||||
| UM exhibit specimen | ||||||||||
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Reptilia
- Ceratopsidae
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Triceratops sp.
Marsh 1889
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Anderson 1999 | 2 individuals | ||||||||
| UM 17062 + rib specimen | ||||||||||
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Acipenseriformes
- Polyodontidae
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Paleopsephurus wilsoni n. gen., n. sp.
MacAlpin 1947
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Wilimovsky 1956 | 2 specimens | ||||||||
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Acipenseriformes
- Acipenseridae
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Protoscaphirhynchus squamosus n. gen., n. sp.
Wilimovsky 1956
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Wilimovsky 1956 | 2 specimens | ||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | McCone |
| Coordinates: | 47.8° North, 106.2° West (view map) | ||||
| Paleocoordinates: | 54.4° North, 79.1° West | ||||
| Basis of coordinate: | stated in text | ||||
| Altitude: | 2320 feet | ||||
| 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: | Hell Creek | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: near boundary with Ft. Union Fm. | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Articulated whole bodies: | some |
| Associated major elements: | some |
| Disassociated major elements: | some |
| Fragmentation: | frequent |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),mechanical,field collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | UMMP | ||
| Collectors: | E. C. Case, W. H. Buettner, & J. A. Wilson | Collection dates: | 1938 |
| Collection method comments: collected by E. C. Case, W. H. Buettner, and J. A. Wilson | |||
Metadata
| Also known as: | Fort Peck | ||
| Database number: | 67129 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2006-11-09 11:59:57 | Last modified: | 2018-02-12 10:26:28 |
| Access level: | the public | Released: | 2006-11-09 11:59:57 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 12319. | ETE | R. S. Lull and N. E. Wright. 1942. Hadrosaurian dinosaurs of North America. Geological Society of America Special Paper 40:1-242 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 19146 | ETE | J. S. Anderson. 1999. Occipital condyle in the ceratopsian Triceratops, with comments on body size variation. Contributions from the Museum of Paleontology, University of Michigan 30(8):215-231 [M. Carrano/M. Carrano] |
| 64680 | L. B. Kellum. 1956. The Museum of Paleontology. In W. A. Donnelly, W. B. Shaw, & R. W. Gjelsness (eds.), The University of Michigan: An Encyclopedic Survey 8:1487-1502 [M. Carrano/M. Carrano] | |
| 19809 | ETE | N. J. Wilimovsky. 1956. Protoscaphirhynchus squamosus, a new sturgeon from the Upper Cretaceous of Montana. Journal of Paleontology 30(5):1205-1208 [M. Carrano/M. Carrano/M. Carrano] |