Jewett Sand Formation

The Jewett Sand Formation is a geologic formation in California, USA.

It preserves fossils dating back to the Miocene Epoch of the Neogene period.

Fossil teeth of C. hastalis
Bat ray in kelp forest , San Clemente Island.
A modern Scorpaenid fish.
Skeleton of Allodesmus at the National Museum of Nature and Science , Tokyo , Japan .
A modern member of the genus Pinna .
The sculpture of the shell of this modern member of the genus Epitonium has raised ribs that are known as costae. Costae are an almost universal feature in shells of Epitonium species.
A modern member of the genus Dentalium .