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Temporal range: 1.8–0.012 Ma[1]
Tetrameryx shuleri.png
Depiction of T. shuleri based on modern pronghorns
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Antilocapridae
Genus: Tetrameryx
Lull, 1921
  • 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]


  1. ^ a b "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.