Tetrameryx

Tetrameryx Temporal range: Pleistocene–0.012 PreЄ Є O S D C P T J K Pg N ↓ [1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Class:	Mammalia
Order:	Artiodactyla
Family:	Antilocapridae
Genus:	†Tetrameryx Lull, 1921
Species
T. irvingtonensis Stirton, 1939 T. knoxensis Hibbard and Dalquest, 1960 T. mooseri Dalquest, 1974 T. shuleri Lull, 1921 T. tacubayensis Mooser and Dalquest, 1975

Tetrameryx is an extinct genus of the North American artiodactyl family Antilocapridae, known from Mexico,^[2] the western United States, and Saskatchewan.^[1] The name means "four [horned] ruminant", referring to the division of each horn near its base into two prongs; in T. shuleri, the rear prong is much longer.^[3]

One member of the genus, T. shuleri, survived until about 12,000 years ago, and was present when Paleo-Indians reached North America.^[4]

Depiction of T. shuleri based on modern pronghorns

References

1. "Tetrameryx Lull 1921". Paleobiology Database. Retrieved 2015-11-21.
2. Dalquest, W. W. (1974-03-30). "A New Species of Four-Horned Antilocaprid from Mexico". Journal of Mammalogy. 55 (1): 96–101. doi:10.2307/1379259.
3. "Stockoceros and Tetrameryx: the Four-Horned Pronghorns". Prehistoric Pronghorn. International Wildlife Museum. Retrieved 2015-11-21.
4. "Tetrameryx shuleri Lull 1921". Paleobiology Database. Retrieved 2015-11-21.