Order Artiodactyla Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 637 722 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Aepycerotinae Gray 1872 Aepycerotinae Gray 1872 , Cat. Ruminant Mamm. Brit. Mus .: 4 . Genera: 1 genus with 1 species: Genus Aepyceros Sundevall 1845 (1 species with 6 subspecies)