An ecological study of the collared lizard (Crotaphytus collaris).    From Wordnik.com.  [Birds from Coahuila, Mexico] Reference

No fossils yet, but we caught this juvenile Crotaphytus collaris eastern or common collared lizard on the way in this morning.    From Wordnik.com.  [Archive 2008-05-01] Reference

This is a very gravid = full of eggs female Crotaphytus bicinctores, surrounded by the herp paparazzi that has become so difficult of late.    From Wordnik.com.  [My herps are cooler than your herps] Reference

In a study published in the September issue of The American Naturalist, A. Kristopher Lappin (Northern Arizona University) and Jerry F. Husak (Oklahoma State University) use the eastern collared lizard (Crotaphytus collaris), a sexually dimorphic lizard in which the jaws of males function as a weapon in fights, to test the hypothesis that weapon performance (i.e., bite force) is a better predictor of fitness than body size and weapon size.    From Wordnik.com.  [A language which shouldn't be possible] Reference

Lizards are numerous, including Bailey's collared lizard (Crotaphytus collaris baileyi), western earless lizard (Holbrookia maculata approximans), southern brownshouldered uta (Uta stansburiana elegans), striped swift (Sceloporus consobrinus), and horned toads (Phrynosoma sp.).    From Wordnik.com.  [Tseh So, a Small House Ruin, Chaco Canyon, New Mexico :] Reference