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| | Systematics of the Artiodactyla |
 | | Includes two genera: Hyemoschus, the African chevrotain, and Tragulus, the Asian "mouse deer." These are the smallest of all artiodactyls; the smallest species, the lesser Malay mouse deer, is only 40 cm long no bigger than a rabbit. |
 | | Includes most living artiodactyls, such as Giraffidae (giraffes and okapi), Cervidae (deer, elk, caribou, etc.), Bovidae (cows, buffalo, sheep, goats, antelope), Moschidae (musk deer), and Antilocapridae (American pronghorn "antelope" which is not a true antelope) Typical pecorans have well-developed, four-chambered ruminant stomachs, and most have paired horns on the head. |
 | | DeerNet, at the University of Alberta, has a list of living ungulates, including photographs. |
| www.ucmp.berkeley.edu /mammal/artio/artiosy.html (243 words) |
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