Pysht Formation
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| Pysht Formation | |
|---|---|
| Stratigraphic range: Late Oligocene, | |
 Fossil Callianopsis from the Pysht Formation | |
| Type | Geological formation |
| Unit of | Twin River Group |
| Underlies | Clallam Formation |
| Overlies | Makah Formation |
| Lithology | |
| Primary | Siltstone, mudstone, conglomerate |
| Location | |
| Coordinates | Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value). |
| Approximate paleocoordinates | Lua error: callParserFunction: function "#coordinates" was not found. |
| Region | Washington |
| Country | United States |
| Type section | |
| Named for | Pysht River |
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.[1]
Fossil content
[edit | edit source]Based on the Paleobiology Database:[2]
Cartilaginous fish
[edit | edit source]| Cartilaginous fish of the Pysht Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Somniosus | S. gonzalezi | A sleeper shark. | 
| ||
Mammals
[edit | edit source]| Mammals of the Pysht Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| cf. Allodesmus | A. sp. | A desmatophocid pinniped. | File:Allodesmus gracilis LACM.jpg | ||
| Behemotops | B. proteus | The most basal known desmostylian. Type locality for genus and species. | File:Behemotops proteus Wikipedia Juandertal.jpg | ||
| Borealodon | B. oseax | A stem-baleen whale. Type locality for genus and species.[3] | |||
| Fucaia | F. goedertorum | An aetiocetid baleen whale. | |||
| ?Kronokotherium | K. sp. | A desmostylian. | |||
| Olympicetus | O. avitus | Two partial skulls belonging to a juvenile and a neonate, including part of the dentition and a tympanic bulla | A simocetid toothed whale. Type locality for genus and species.[4][5] | File:Olympicetus thalassodon reconstruction.png | |
| O. thalassodon | Posterior part of skull | ||||
| Pinnarctidion | P. iverseni | A nearly complete skull and limited postcrania (SDSNH 146624).[6] | A pan-pinniped. | ||
| Sitsqwayk | S. cornishorum | Partial skull, tympanic bullae, mandibles and postcrania.[7] | An basal baleen whale. Type locality for genus and species.[7] | ||
Birds
[edit | edit source]| Birds of the Pysht Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Klallamornis | K. buchanani | A plotopterid suliform.[8] | File:Klallamornis.jpg | ||
| Tonsala | T. hildegardae | A plotopterid suliform.[9] | File:Tonsala hildegardae.png | ||
Crustaceans
[edit | edit source]| Crustaceans of the Pysht Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Upogebia | U. barti | Locality RB 18.[10] | Multiple specimens.[10] | An upogebiid mud shrimp. | |
See also
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References
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