The Pronghorn - Antilocapra americana
The pronghorn is still colloquially known as the “prong-horned antelope”, even though it’s not actually related to the true Old World antelopes, which are native to Asia and Africa. It fills a similar ecological niche, and appears very similar, due to convergent evolution.
When humans first arrived in North America, there were five species of Antilocarpa extant, but the other four have since gone extinct. The other North American Artiodactyla were much larger than the pronghorns are. In fact, the fawns of these ruminants are so small at birth (only a few lbs) that they’re not uncommonly snatched by golden eagles, in smaller harems that cannot effectively defend their offspring while eating.
Quadrupeds of North America. John James Audubon, 1854.

The Pronghorn - Antilocapra americana

The pronghorn is still colloquially known as the “prong-horned antelope”, even though it’s not actually related to the true Old World antelopes, which are native to Asia and Africa. It fills a similar ecological niche, and appears very similar, due to convergent evolution.

When humans first arrived in North America, there were five species of Antilocarpa extant, but the other four have since gone extinct. The other North American Artiodactyla were much larger than the pronghorns are. In fact, the fawns of these ruminants are so small at birth (only a few lbs) that they’re not uncommonly snatched by golden eagles, in smaller harems that cannot effectively defend their offspring while eating.

Quadrupeds of North America. John James Audubon, 1854.

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