Phenacodus

Phenacodus Temporal range: Late Paleocene–Middle Eocene PreꞒ Ꞓ O S D C P T J K Pg N
P. primaevus at the AMNH, collected from Bighorn Basin, Wyoming.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Family:	†Phenacodontidae
Subfamily:	†Phenacodontinae
Genus:	†Phenacodus Cope, 1873
Species[1]
†P. bisonensis †P. condali †P. grangeri †P. intermedius †P. lemoinei †P. magnus †P. matthewi †P. primaevus (type species) †P. teilhardi †P. trilobatus †P. vortmani
Synonyms
Trispondylus Cope, 1884

Phenacodus (Greek: "deception" (phenax), "tooth' (odus)^[2]) is an extinct genus of mammals from the late Paleocene through middle Eocene, about 55 million years ago. It is one of the earliest and most primitive of the ungulates, typifying the family Phenacodontidae and the order Perissodactyla.^{[citation needed]}