About Phrynosoma asio Cope, 1864
Taxonomy and Endemic Range
The giant horned lizard, scientifically named Phrynosoma asio, is a species of phrynosomatid lizard that is endemic to the Pacific coast of southern Mexico.
Body Form and Habitat Adaptation
It is the largest and most slender of all horned lizards, with a more typical lizard-like overall appearance, and is capable of surviving in desert habitats.
Spine and Horn Structure
The spines found on its back and sides are formed from modified scales, while the horns on its head are true horns that contain a bony core.
Common Name Origin and Size
This species gets its common name from its large size: individuals can reach 6 to 8 inches (15 to 20 cm) in total length from snout to tail.
