Equus caballus Linnaeus, 1758

James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Perissodactyla, Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA: Alien Press, Inc. & The Association of Systematics Collections, pp. 308-311 : 308

Equus caballus Linnaeus, 1758 . Syst. Nat., 10th ed., 1:73.

TYPE LOCALITY: Norway (domesticated stock) .

DISTRIBUTION: Domesticated worldwide; wild population survived (at least until recently) in S.W. Mongolia and adjacent Kansu, Sinkiang and Inner Mongolia ( China)(SW). West to Poland before the 19th Century, in steppe zone.

COMMENT: Groves, 1971, Bull. Zool. Nomenci., 27:269- 272., and Corbet, 1978: 194, have proposed that ferus replace caballus , objecting to use of domesticated stock for type material. Includes przewalskii ; despite different chromosome numbers (Benirschke et al., 1972, Science, 148:382-383), the fundamental chromosome number of Przewalski and domestic horses is the same and matings produce fertile offspring; therefore, DKB and IUK consider them conspecific. Gromov and Baranova, 1981:333-334, recognized the two as separate species and used the names gmelini and przewalskii . See Sokolov and Orlov, 1980:249 for discussion of Mongolian and Chinese wild stocks.

PROTECTED STATUS: CITES - Appendix I and U.S. ESA - Endangered as Equus przewalskii only.

ISIS NUMBER: 5301418001001003001 as E. caballus .

5301418001001006001 as E. przewalskii .