MPM locality 3850 (Hell Creek Formation): Maastrichtian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
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Stenotholus kohleri n. gen., n. sp.
Giffin et al. 1988
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1 specimen | |||||||||
synonym of Pachycephalosaurus wyomingensis | ||||||||||
MPM 7111 | ||||||||||
Reptilia
- Hadrosauridae
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Hadrosauridae indet.
Cope 1869
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see common names |
Geography
Country: | United States | State/province: | Montana | County: | McCone |
Coordinates: | 47.7° North, 106.2° West (view map) | ||||
Paleocoordinates: | 54.5° North, 78.6° West | ||||
Basis of coordinate: | stated in text | ||||
Altitude: | 731 meters | ||||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
*Period: | Late/Upper Cretaceous | *Epoch: | Senonian |
*International age/stage: | Maastrichtian - Maastrichtian | *Local age/stage: | Tithonian |
Key time interval: | Maastrichtian | ||
Age range of interval: | 72.10000 - 66.00000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Hell Creek | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Middle Hell Creek. Approx. 100 feet above Fox Hills Sandstone/Hell Creek Fm contact, somewhat beneath the middle of the 250-280 feet of Hell Creek Fm east of the Fort Peck Reservoir. |
Lithology and environment
Primary lithology: | green,yellow sandstone |
Secondary lithology: | green,yellow siltstone |
Lithology description: green to buff fine-grained sandstone and siltstone | |
Environment: | "channel" |
Glacial or sequence phase: | regressive |
Geology comments: "flat bedding and silty to sandy grain size..suggest sediments deposited lateral to a fluvial channel." |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Preservation of anatomical detail: | good |
Disassociated major elements: | some |
Disassociated minor elements: | some |
Fragmentation: | occasional |
Collection methods and comments
Collection methods: | surface (float),field collection,survey of museum collection |
Reason for describing collection: | taxonomic analysis |
Metadata
Database number: | 12977 | ||
Authorizer: | J. Alroy | Enterer: | R. Whatley |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2002-01-12 17:01:11 | Last modified: | 2005-09-18 21:11:38 |
Access level: | the public | Released: | 2002-01-12 17:01:11 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
4306. | 5% 13800 | E. B. Giffin, D. L. Gabriel, and R. E. Johnson. 1988. A new pachycephalosaurid skull (Ornithischia) from the Cretaceous Hell Creek Formation of Montana. Journal of Vertebrate Paleontology 7(4):398-407 [J. Alroy/R. Whatley/J. Alroy] |
Secondary references:
14453 | ETE | R. M. Sullivan. 2003. Revision of the dinosaur Stegoceras Lambe (Ornithischia, Pachycephalosauridae). Journal of Vertebrate Paleontology 23(1):181-207 [M. Carrano/M. Carrano/M. Carrano] |