Animal Family: Antilocapridae

About the Antilocapridae Family

The parent order is Artiodactyla.

Step into the extraordinary world of the Antilocapridae family, an ancient and unique group within the animal kingdom, best known for its sole surviving member: the pronghorn (Antilocapra americana). Often mistaken for an antelope, the pronghorn stands alone as the fastest land mammal in North America and possesses a truly distinctive set of characteristics that set its family apart.

What makes Antilocapridae truly unique is its evolutionary isolation and specialized adaptations. Unlike true antelopes, the pronghorn sheds its horn sheaths annually, a feature shared with deer (Cervidae) but not found in bovids (Bovidae), which have permanent horns. This unique combination of bone-cored, branching horns with annually shed keratinous sheaths is a hallmark of the Antilocapridae. Furthermore, their incredible speed, reaching up to 60 miles per hour, is attributed to their exceptionally large lungs, heart, and windpipe, alongside their unique muscular structure and specialized foot anatomy, making them perfectly adapted for open, vast landscapes.

Common traits among current and extinct members of the Antilocapridae family include a relatively slender build, long legs, and a keen sense of sight, all contributing to their remarkable agility and ability to evade predators. Their dentition is adapted for a herbivorous diet, allowing them to efficiently graze on various plant materials found in their arid and semi-arid habitats. While only one species remains today, the fossil record reveals a diversity of forms within this family, each sharing the fundamental anatomical innovations that allowed them to thrive in North American grasslands for millions of years.

Other Orders

There are many different orders based upon their class. To learn more about classification orders, click here.