Nestucca Formation

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°12′N 124°00′W / 45.2°N 124.0°W / 45.2; -124.0Coordinates: 45°12′N 124°00′W / 45.2°N 124.0°W / 45.2; -124.0
Approximate paleocoordinates	45°30′N 111°42′W / 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) Nestucca Formation (Oregon) Show map of the United StatesShow map of OregonShow all

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]

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

• ^[4]

Bivalves

• ^[5]

Decapods

• ^[3][6]

See also[]

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

References[]

Bibliography[]

• Hickman, C. S. 2018. A new Calliovarica species (Seguenzioidea: Chilodontidae) from the Eocene of Oregon, USA: Persistence of a relict Mesozoic gastropod group in a unique forearc tectonic setting. 35. 1–10.
• Feldmann, R. M. 1989. Lyreidus alseanus Rathbun from the Paleogene of Washington and Oregon, U.S.A.. Annals of the Carnegie Museum 58. 61–70.
• Welton, B. J. 1974. Heptranchias howellii (Reed, 1946) (Selachii: Hexanchidae) in the Eocene of the United States and British Columbia. 17. 1–15.
• Welton, B. J. 1972. Fossil sharks in Oregon. 34. 161–170.
• Vokes, H. E. 1956. Notes on the Nucinellidae (Pelecypoda) with description of a new species from the Eocene of Oregon. Journal of Paleontology 30. 652–671.