Clallam Formation
Geologic formation in Washington, U.S.
From Wikipedia, the free encyclopedia
The Clallam Formation is a geologic formation in Washington (state). It preserves marine fossils dating back to the late Oligocene and early Miocene period. It outcrops on the northern Olympic Peninsula and along parts of the Strait of Juan de Fuca.[1][2]
TypeFormation
UnderliesQuinault Formation
OverliesPysht Formation
PrimarySandstone, conglomerate, shale
| Clallam Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Formation |
| Underlies | Quinault Formation |
| Overlies | Pysht Formation |
| Lithology | |
| Primary | Sandstone, conglomerate, shale |
| Other | Coal |
| Location | |
| Region | Washington (state) |
| Country | United States |
| Type section | |
| Named for | Clallam County, Washington |
Vertebrate paleobiota
Mammals
| Mammals of the Clallam Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Stratigraphy | Material | Notes | Images |
| Desmostylus | D. hesperus | Aquitanian | A desmostylian. |  | |
| Kolponomos | K. clallamensis | An amphicynodont pan-pinniped. Type locality of genus and species. |  | ||
| aff. Kronokotherium | K. sp. | A desmostylian. | |||
| Squalodelphinidae indet. | A squalodelphinid toothed whale. | ||||
| Squaloziphius | S. emlongi | A squaloziphiid toothed whale. Type locality of genus and species. | |||
