Notogoneus osculus Cope, 1885

Taxonomy

Beaked sandfish

Kingdom: Animalia
Phylum: Chordata
Class: Actinopteri Cope 1871
Order: Gonorynchiformes
Family: Gonorhynchidae Gunther 1868
Genus: Notogoneus
Species: Notogoneus osculus
Author Citation COPE, 1885

Geological Time Scale

Eon: Phanerozoic
Era: Cenozoic
Period: Paleogene
Sub Period: None
Epoch: Eocene
International Age: Ypresian

Stratigraphy

Green River Formation
Fossil Butte Member

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 47 cm

Location

Kemmerer
Wyoming
United States

• eocene
• green river formation
• kemmerer
• notogoneus
• tff-oilshale-ch1061

Comments

Taxonomy from Fossilworks.org.

Revised generic diagnosis from Grande and Grande 2008, p. 10. "†Notogoneus differs from all other genera in the family Gonorynchidae by the following characters: (1) the subopercle bears a series of deep clefts along its posterior margin; (2) the first and second hypurals are not fused to each other; (3) the parhypural is not fused to the vertebral column; (4) the first and second hypurals are not fused to the vertebral column; and (5) scales in adults are nearly the length of a centrum. Also, the frontal is a paired element in †Notogoneus (vs. median in Gonorynchus)."

Line drawing from Grande & Grande 2008, p. 4:

 

References:

Cope, E. D. (1885) Eocene paddle-fish and Gonorhynchidae. American Naturalist, 19:1090–1091.
Woodward, A. S. (1901) Catalogue of Fossil Fishes in the British Museum (Natural History), Part IV 1-63.
Hay, O. P. (1902) Bibliography and Catalogue of the Fossil Vertebrata of North America. Bulletin of the United States Geological Survey 179:1-868.
Grande, L. and Grande, T. (2008) Redescription of the type species for the genus Notogeneus (Teleostei: Gonorhynchidae) based on new, well-preserved material. The Paleontological Society Memoir 70:1-31 [M. Uhen/M. Uhen]