Giant horned lizard

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Giant horned lizard
Phrynosoma asio.jpg
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Iguania
Family: Phrynosomatidae
Genus: Phrynosoma
P. asio
Binomial name
Phrynosoma asio
Cope, 1864[2]

The giant horned lizard (Phrynosoma asio) is a species of phrynosomatid lizard which is endemic to the Pacific coast of southern Mexico. It is the largest horned lizard and is also the most slender (it has a typical lizard-like appearance). It is able to survive in the desert. The spines on its back and sides are made from modified scales, whereas the horns on its head are true horns (i.e., they have a bony core).


  1. ^ Luis Canseco-Marquez, Antonio Muñoz, André García, Paulino Ponce. (2013). Phrynosoma asio. The IUCN Red List of Threatened Species doi:10.2305/IUCN.UK.2013-2.RLTS.T198393A2524363.en
  2. ^ The Reptile Database.