Adult in crevice and shelf of cliff in canyon floor
Adult active and basking in Emory Oak, ~2m above ground, in valley floor open woodland/savanna
Santa Cruz County, Arizona, US
Several adult individuals seen, very common at this site on exposed bedrock of Madera Creek bed and boulders and cliffs lining the canyon floor.
The genus Urosaurus (the tree and brush lizards) belongs to the New World iguanian family Phrynosomatidae. They can be distinguished from members of the genus Sceloporus by the presence of a gular (under neck) fold and granular lateral scales. They can be distinguished from members of the genus Uta by the presence of enlarged (sometimes only slightly) dorsal scales. It has been used as a model system in lizard life-history studies, and populations produce two or...