Tetraclaenodon

Phylum:Chordata

Class:Mammalia

Family:†Phenacodontidae

Genus:†Tetraclaenodon
Scott, 1892

Tetraclaenodon Temporal range: Paleocene 61.7–56.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Family:	†Phenacodontidae
Genus:	†Tetraclaenodon Scott, 1892
Species[1][2]
†Tetraclaenodon puercensis (Cope, 1881) †Tetraclaenodon septentrionalis Thewissen, 1990

Tetraclaenodon was a genus of small and early ungulate mammals that was part of the Phenacodontidae family.^[3] It is the oldest and most primitive phenacodontid.^[4] Its fossils known from the Nacimiento Formation, New Mexico. In 2012, Tetraclaenodon was defined as the basalmost member of the clade containing "Phenacodontidae" and Altungulata.^[4]