| 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 |
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]
| 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. | |||
Kolponomos is an extinct genus of carnivoran mammal that existed in the Late Arikareean North American Land Mammal Age, early Miocene epoch, about 20 million years ago. It was likely a marine mammal. The genus was erected in 1960 by Ruben A. Stirton, a paleontologist at the University of California Museum of Paleontology, Berkeley, for the species K. clallamensis, on the basis of a partial skull and jaw found on the Clallam Formation of the Olympic Peninsula. At the time, Stirton questionably assigned it to Procyonidae, its systematic position remained problematic until the discovery of more fossils including a nearly complete cranium from the original locality of K. clallamensis which helped identify it as part of the group from which pinnipeds evolved.
The Tuscahoma Formation or Tuscahoma Sand is a geologic formation in Mississippi and Alabama, USA. It preserves fossils dating back to the early Paleogene period, from the Late Paleocene and Early Eocene. It was primarily deposited in a marine habitat, but one Wasatchian-aged locality near Meridian, Mississippi was deposited in an estuarine habitat that preserves a significant terrestrial vertebrate fauna.
The Cedar District Formation is a geologic formation exposed on Vancouver Island, the Gulf Islands of British Columbia and San Juan Islands of Washington (state). It preserves fossils dating back to the Campanian Epoch of the Cretaceous period. It dates to the lower mid-Campanian.
The Nanaimo Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Cretaceous period.
The Nooksack Formation is a geologic formation in Washington. It preserves fossils dating back to the Cretaceous period.
The Douglas Canyon Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Neogene period.
The Ellensburg Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Neogene period.
The Montesano Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Neogene period.
The Blakeley Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period.
The Cowlitz Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period
The Crescent Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period.
The Lincoln Creek Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period.
The Makah Formation is a geologic formation in Washington (state). It was deposited during the late Paleogene period between the late Eocene and early Oligocene epoches, and preserves marine fossils dating to the early Oligocene. It outcrops at the northwestern edge of the Olympic Peninsula.
The Pysht Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period, which appear to have been deposited in an offshore marine environment. Outcrops are present on the northern Olympic Peninsula, in Clallam County.
The Quimper Sandstone Formation is a geologic formation in the U.S. state of Washington. It preserves fossils dating back to the Paleogene period.
The Raging River Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period.
The Roslyn Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period.
The Twin Rivers Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period.
The Offley Island Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Silurian period.
The Whidbey Formation is a geologic formation in Washington (state). It preserves fossils.
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