North of Lewistown: Late/Upper Campanian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Mosasauridae
|
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Mosasaurus missouriensis
(Harlan 1834)
|
1 specimen | |||||||||
| USNM 8086, skull | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Montana | County: | Fergus |
| Coordinates: | 47.4° North, 109.1° West (view map) | ||||
| Paleocoordinates: | 54.3° North, 75.4° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Late/Upper Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
| Geological group: | Montana | Formation: | Bearpaw Shale |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | "shale" |
| Includes fossils? | Y |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | rare |
| Fragmentation: | occasional |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection size: | 1 specimens |
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | USNM |
Metadata
| Database number: | 107718 | ||
| Authorizer: | M. Carrano | Enterer: | H. Street |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2011-04-14 07:19:01 | Last modified: | 2018-06-14 12:17:45 |
| Access level: | the public | Released: | 2011-04-14 07:19:01 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 35745. | ETE | D. A. Russell. 1964. The Skull of American Mosasaurs. 1-386 [M. Carrano/H. Street/P. Wagner] |