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Related to Antilocapra americana: Ovis canadensis, Lepus americanus




hoofed herbivorous mammal, Antilocapra americana, of the W United States and N Mexico. Although it is often called the American, or prong-horned, antelope, the pronghorn is the only living member of the Antilocapridae and is more closely related to the giraffe; antelopes are African and Eurasian members of the cattle family (Bovidae).

The pronghorn is about the size of a goat, standing 3 ft (90 cm) high at the shoulder and weighing about 100 lb (45 kg). The coat is light brown with white underparts, two white throat stripes, and a white rump patch. The tail is short, and the ears are long and pointed. Both sexes have horns, which consist of a horny sheath and a bony core, like those of antelopes; unlike antelope horns, those of the pronghorn bear a single branch, or prong, and lose the outer sheath each year.

Pronghorns live in small bands on open plains. Chiefly browsers, they feed largely on sagebrush and other shrubs, but also eat grasses. The swiftest of North American mammals, they attain speeds of 60 mi (96 km) per hr, but are poor jumpers. Their principal enemies, besides humans, are wolves and coyotes. Before the settlement of North America by Europeans pronghorns were comparable in numbers to buffalo; by the beginning of the 20th cent., however, they had been nearly exterminated by hunting. They are now protected on reservations, where they have made a good recovery.

Pronghorns are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Artiodactyla, family Antilocapridae.


See J. van Wormer, The World of the Pronghorn (1968).

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(vertebrate zoology)
Antilocapra americana. An antelopelike artiodactyl composing the family Antilocapridae; the only hollow-horned ungulate with branched horns present in both sexes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The rolling grasslands and shrub-steppe communities occupied by Pronghorn (Antilocapra americana) are often strongly influenced by plant phenology and abiotic conditions (Yoakum 2004a).
Effects of midsummer drought on mortality of doe pronghorn (Antilocapra americana).--Southwest.
Microsatellite analysis revels multiple paternity in a population of wild pronghorn antelope (Antilocapra americana).
Polioencephalomalacia-like disease in pronghorns (Antilocapra americana).
Captive populations of the endangered Antilocapra americana peninsularis in Baja California Sur and Antilocapra americana sonoriensis in southwest Arizona have also been established with the intention of eventually restoring desert pronghorn to historic habitats.
Here, we examine the use of fecal pellet dimensions of endangered Sonoran pronghorn Antilocapra americana sonoriensis to distinguish between fawns, yearlings and adults.
Pronghorn (Antilocapra americana) are an important game animal in several states and provinces (O'Gara and Yoakum, 2004); however, little is known about the variation and drivers of ASR among their populations.
However, records of pronghorns (Antilocapra americana) becoming fatally locked together while fighting are rare (Scholey, 1933; O'Gara, 2004c) and there is no documentation of predation on pronghorns while they are locked together.
In summer, on the Blacktail Plateau, a solitary buck often browses sagebrush right along the paved road, displaying the black 12- to 20-inch lyre-shaped horns with forward-jutting prongs that give Antilocapra americana its common name.
In November 2006, the Fish and Wildlife Service released the first ever captive-bred endangered Sonoran pronghorn (Antilocapra americana sonoriensis) into their historic Arizona habitat.
Consider the facts that favor antilocapra americana over elk and deer for first-timers m the West.