Nestucca Formation

The Nestucca Formation is a geologic formation in Oregon. It preserves fossils dating back to the Bartonian to Priabonian stages of the Eocene period.^[1]

Nestucca Formation
Stratigraphic range: Bartonian-Priabonian ~40–34 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Lithology
Primary	Siltstone
Other	Sandstone, shale
Location
Coordinates	45.2°N 124.0°W / 45.2; -124.0
Approximate paleocoordinates	45.5°N 111.7°W / 45.5; -111.7
Region	Tillamook County, Oregon
Country	United States
Type section
Named for	Nestucca River
Nestucca Formation (the United States) Show map of the United States Nestucca Formation (Oregon) Show map of Oregon

Fossil content

The formation has provided fossils of:^[1]

Vertebrates

Mammals

• Mammalia indet.^[2]

Fish

• Heptranchias howelli^[3]
• Galeocerdo sp.^[2]
• Raja sp.^[2]
• Isurus sp.^[2]

Invertebrates

Gastropods

• Calliovarica oregonensis^[4]

Bivalves

• Nucinella oregona^[5]

Decapods

• Macroacaena alseanus^[3][6]

See also

• List of fossiliferous stratigraphic units in Oregon
• Paleontology in Oregon
• Alsea Formation