Equus occidentalis

Equus occidentalis

Skeleton from the La Brea tar pits
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Perissodactyla
Family:	Equidae
Genus:	Equus
Species:	†E. occidentalis
Binomial name
†Equus occidentalis Owen, 1863

Skull

Equus occidentalis or the Western horse, was a Pleistocene species of horse, now extinct, that inhabited North America.^[1]

This species represents the larger end of the prehistoric horse spectrum - it was about the size of a mustang, weighing up to 519 kg (1144 lbs).^[2] It was a stoutly built animal and resembled the extinct quagga or the modern plains zebra, although it was not a close relative of either or these species.

References

↑ Klide, A. M. (1989). "Overriding vertebral spinous processes in the extinct horse, Equus occidentalis". American Journal of Veterinary Research 50 (4): 592–593. PMID 2712429.
↑ http://www.thefreelibrary.com/Turn+your+head+and+roar%3a+can+diagnosing+disease+in+fossils+shed+light+...-a081827791

Species of the genus Equus

Extinct species are marked †

Asses	Equus africanus Equus africanus africanus Equus africanus asinus †Equus africanus atlanticus Equus africanus somaliensis Equus hemionus Equus hemionus hemionus †Equus hemionus hemippus Equus hemionus khur Equus hemionus kulan Equus hemionus luteus Equus hemionus onager †Equus hydruntinus Equus kiang Equus kiang chu Equus kiang holdereri Equus kiang kiang Equus kiang polyodon

Zebras	Equus grevyi Equus quagga Equus quagga burchellii Equus quagga boehmi Equus quagga borensis Equus quagga chapmani Equus quagga crawshayi Equus quagga selousi †Equus quagga quagga †Equus stenonis †Equus simplicidens Equus zebra Equus zebra hartmannae Equus zebra zebra

Horses	†Equus complicatus †Equus conversidens †Equus crinidens †Equus cumminsii †Equus excelsus Equus ferus Equus ferus caballus †Equus ferus ferus Equus ferus przewalskii †Equus francisci †Equus fraternus †Equus giganteus †Equus lambei †Equus namadicus †Equus niobrarensis †Equus occidentalis †Equus pacificus †Equus parastylidens †Equus pectinatus †Equus scotti †Equus sivalensis †Equus yunnanensis

Equidae Evolution of the horse Wild horse Domestication of the horse

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