Forbes Shale
The Forbes Shale is a geologic formation in the Sacramento Valley of northern California, United States. It is found in the Sutter Buttes area of Sutter [County, California]. It preserves fossils dating back to the Coniacian stage of the Late Cretaceous period.
Fossil content
The following fossils were reported from the formation:;Bivalves
- Cladoceramus undulatoplicatus
- Glycymerita veatchii
- Inoceramus subundatus
- I. Inoceramus vancouverensis
- I. aff. chicoensis
- I. aff. klamathensis
- I. aff. whitneyi
- Parallelodon|Parallelodon brewerlanus
- Pseudomelania colusaensis
- Bernaya kayei
- Biplica obliqua
- Dentalium whiteavesi
- Pseudomelania colusaensis
- Tessarolax distorta
- Volutoderma californica
- Baculites chicoensis
- B. inornatus
- Desmophyllites diphylloides
- Eupachydiscus arbucklensis
- E. willgreeni
- Eutrephoceras campbelli
- Lytoceras alamedense
- Nowakites dobbinsi
- N. rumseyensis
- Oxybeloceras petrolense
- Parapachydiscus cortinaensis
- Puzosia gorrilli
- Puzosia arenaica
- Baculites sp.
- Canadoceras sp.
- ''Hauericeras sp.''