Clallam Formation

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]

Clallam Formation
Stratigraphic range: Late Oligocene-early Miocene PreꞒ Ꞓ O S D C P T J K Pg N
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.

See also

• Earth sciences portal
• United States portal
• Paleontology portal

• List of fossiliferous stratigraphic units in Washington (state)
• Paleontology in Washington (state)