Trigonotodus

Trigonotodus
Temporal range: early Eocene-late Oligocene
35–23 Ma
Lateral tooth of Trigonotodus alteri
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Chondrichthyes
Order:
Lamniformes
Family:
Alopiidae
Genus:
Trigonotodus

Kozlov, 1999
Type species
Trigonotodus tusbairicus
Kozlov, 1999
Species

Trigonotodus is an extinct genus of sharks, most likely belonging to the family Alopiidae. This genus includes three extinct species, which span from the early Eocene to the late Oligocene. It was originally placed in the family Otodontidae, but subsequently found to have affinities with Thresher sharks.[1] This genus is sometimes considered part of the genus Alopias.[1] It is currently only known from isolated teeth.

  1. ^ a b Jim Bourdon (2006). "Thresher sharks — Lower Eocene - Recent". elasmo.com. Retrieved 2020-02-04.