Arizona Toad Anaxyrus microscaphus  (Cope, 1866)
An adult specimen from Washington County, Utah Image © Suzanne L. Collins, 2001
Taxonomic Comments:
Frost, Grant, Faivovich, Bain, Haas, Haddad, De Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green & Wheeler (2006. The Amphibian Tree of Life. Bulletin of the American Museum of Natural History 297: 1-370) placed this species in the genus Anaxyrus (Tschudi, 1845). The standard common name remains Arizona Toad.