USGS loc. M-177, Logan Ridge: Cenomanian, California
collected by R. D. Brown, Jr. and E. I. Rich 1958
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Bivalvia
- Pholadida
- Corbulidae
|
|||||||
|
Caryocorbula onoensis
Squires and Saul 2004
|
Squires and Saul 2004 | ||||||
|
Gastropoda
- Pseudomelaniidae
|
|||||||
|
Trajanella californica
(Gabb 1864)
|
|||||||
|
Gastropoda
- Turritellidae
|
|||||||
|
Turritella petersoni
Merriam 1941
|
|||||||
|
Gastropoda
- Turbinidae
|
|||||||
|
Igonoia shastana
Squires 2011
|
Squires 2011 | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | California | County: | Colusa |
| Coordinates: | 39.4° North, 122.3° West (view map) | ||||
| Paleocoordinates: | 40.5° North, 82.7° West | ||||
| Basis of coordinate: | stated in text |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| Key time interval: | Cenomanian | ||
| Age range of interval: | 100.5 - 93.9 m.y. ago |
Stratigraphy
| Formation: | Antelope | ||||
| Stratigraphy comments: Upper part of Antelope Shale, stratigraphic unit 7c of Brown and Rich (1961) and approximately 23 to 30 m below base of Venado Sandstone Member of Cortina Formation (informal). Cenomanian. |
Lithology and environment
| Primary lithology: | pebbly mudstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | USGS | ||
| Collectors: | R. D. Brown, Jr. and E. I. Rich | Collection dates: | 1958 |
Metadata
| Database number: | 220369 | ||
| Authorizer: | J. Marcot | Enterer: | J. Marcot |
| Modifier: | J. Marcot | Research group: | marine invertebrate |
| Created: | 2021-05-24 13:11:14 | Last modified: | 2021-05-24 20:24:24 |
| Access level: | the public | Released: | 2021-05-24 13:11:14 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 76985. | R. L. Squires and L. R. Saul. 2004. The pseudomelaniid gastropod Paosia from the marine Cretaceous of the Pacific Slope of North America and a review of the age and paleobiogeography of the genus. Journal of Paleontology 78(3):484-500 [J. Marcot/J. Marcot] |
Secondary references:
| 59063 | R. L. Squires. 2011. A new genus of Cretaceous margaritine gastropod (Turbinidae) from the northeastern Pacific Ocean. The Nautilus 125(3):137-149 [P. Wagner/P. Wagner] | |
| 76984 | R. L. Squires and L. R. Saul. 2004. Cretaceous corbulid bivalves of the Pacific Slope of North America. The Veliger 47(2):103-129 [J. Marcot/J. Marcot] |