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 Pseudois Hodgson 1846 Pseudois Hodgson 1846 , J. Asiat. Soc. Bengal, 15: 343 . Type Species: Ovis nayaur Hodgson 1833 Species and subspecies: 2 species: Species Pseudois nayaur (Hodgson 1833) Species Pseudois schaeferi Haltenorth 1963 Discussion: Revised by Groves (1978 c ) . Reviewed by Wang and Hoffmann (1987) .