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Class Reptilia
Order Squamata
Suborder Serpentes
Family Colubridae


Gyalopion canum Cope 1860—Western Hooknose SnakeRegional Pleistocene distribution of fossil Gyalopion canum.

Gyalopion canum. Photograph by Carl S. Lieb.Van Devender and Worthington (1977) gave the most common habitat of this snake as desertscrub and grassland, but noted that it may occur in more mesic environments on occasion. In our region, it occurs now largely from central New Mexico and southeastern Arizona south.

Fig. 1. Gyalopion canum. Photograph by Carl S. Lieb.


Late Wisconsin/Holocene: Deadman Cave (Mead et al. 1984); Fowlkes Cave (Parmley 1990); Howell's Ridge Cave (Van Devender and Worthington 1977).

Literature. Mead et al. 1984; Parmley 1990; Van Devender and Worthington 1977.


Last Update: 5 Mar 2013