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 Ammodorcas Thomas 1891 Ammodorcas Thomas 1891 , Proc. Zool. Soc. Lond., 1891: 207 . Type Species: Cervicapra clarkei Thomas 1891 Species and subspecies: 1 species: Species Ammodorcas clarkei Thomas 1891 Discussion: Sister taxon of Litocranius ; see Groves (1997 c ) but not Groves (2000 b ) .