The Crotaphytidae, or collared lizards, are a family of desert-dwelling reptiles native to the Southwestern United States and northern Mexico. They are very fast-moving animals, with long limbs and tails, and are carnivorous, feeding mainly on insects and smaller lizards.
- Femoral pores present
- Interparietal scale small (distinctly smaller than ear opening)
- Never have an enlarged midorsal scale row or fringe
- Never have a divided rostral scale
- No bony spines or projecting ridges on their heads
- No scales projecting over their ears, and no scales forming a prominent fringe on sides of toes as in Phrynosomatidae
- Cope's leopard lizard – Gambelia copeii (Yarrow, 1882)
- blunt-nosed leopard lizard – Gambelia sila (Stejneger, 1890)
- long-nosed leopard lizard – Gambelia wislizenii (Baird & Girard, 1852)
- venerable collared lizard – Crotaphytus antiquus Axtell & Webb, 1995
- desert collared lizard – Crotaphytus bicinctores N.M. Smith & W.W. Tanner, 1972
- common collared lizard – Crotaphytus collaris (Say, 1823)
- Dickerson's collared lizard – Crotaphytus dickersonae K.P. Schmidt, 1922
- Grismer's collared lizard – Crotaphytus grismeri McGuire, 1994
- Eastern collared lizard – Crotaphytus insularis Van Denburgh & Slevin, 1921
- Sonoran collared lizard – Crotaphytus nebrius Axtell & Montanucci, 1977
- reticulated collared lizard – Crotaphytus reticulatus Baird, 1858
- Baja collared lizard – Crotaphytus vestigium N.M. Smith & W.W. Tanner, 1972
- Dahms Tierleben. www.dahmstierleben.de/systematik/Reptilien/Squamata/Iguania/crotaphytidae.
- "Gambelia ". The Reptile Database. www.reptile-database.org.
- "Crotaphytus ". The Reptile Database. www.reptile-database.org.
- Frost DR, Etheridge RE. 1989. A Phylogenetic Analysis and Taxonomy of Iguanian Lizards (Reptilia: Squamata) Univ. Kansas Mus. Nat. Hist. Misc. Publ. 81: 1-62. (Family Crotaphytidae, p. 36).
- Smith HM, Brodie ED Jr. 1982. Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. ISBN 0-307-13666-3. (Subfamily Crotaphytinae, p. 106).
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