Fossils found in Washington
The Paleobiology Database records 475 fossil occurrences of 156 genera in Washington, United States. Every fossil site is shown on the map; colours show the main group found there. States are as recorded by the Paleobiology Database for each fossil collection.
Dots are fossil collections in the Paleobiology Database on today’s map, merged where closer than about 5 km. See them on the ancient Earth →
What fossils have been found in Washington?
The genera with the most fossil records in Washington include Hypolagus, Mammuthus, Bison, Diceratherium, Olympicetus, Klallamornis.
Prehistoric birds (11 genera)
Klallamornis, Tonsala, Branta, Fratercula, Rissa, Makahala, Olympidytes · 4 more genera recorded.
Ice Age & later mammals (101 genera)
Hypolagus, Mammuthus, Bison, Diceratherium, Olympicetus, Spermophilus, Mammut, Odocoileus, Camelops, Miohippus, Castor, Puma, Sorex, Thomomys, Allodesmus, Hemiauchenia, Behemotops, Fucaia, Mimomys, Equus, Megalonyx, Borophagus, Platygonus, Neotamias, Plionarctos, Cormocyon, Megatylopus, Mesoreodon, Eporeodon, Hypertragulus, Promerycochoerus, Dipoides, Alilepus, Bretzia, Plesippus, Kronokotherium, Trigonictis, Camelus, Mustela, Cervus, Procyon, Hipparion, Ammospermophilus, Dinofelis, Perognathus, Phenacomys, Mylodon, Scapanus, Oreamnos, Kolponomos, Palaeolagus, Desmostylus, Paramylodon, Aphelops, Parailurus, Desmatophoca, Capromeryx, Cranioceras, Cynarctus, Prosthennops, Enhydrocyon, Satherium, Merycoides, Paraenhydrocyon, Pinnarctidion, Wimahl, Buisnictis, Hoplictis, Paenemarmota, Procastoroides, Salishicetus, Sitsqwayk, Squaloziphius, Zarhinocetus, Paronychomys · 26 more genera recorded.
Ancient fish & sharks (23 genera)
Otodus · 22 more genera recorded.
Ammonites & nautiloids (16 genera)
16 more genera recorded.
Ediacaran & Cambrian life (5 genera)
5 more genera recorded.
Fossil occurrences: Paleobiology Database (CC0 as reported by the API; CC BY 4.0 policy), downloaded 23 October 2026. Genus pages quote Wikipedia (CC BY-SA 4.0).