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Genus Holbrookia
Spot-tail Earless Lizard - The Spot-tailed Earless Lizard is a species of Phrynosomid lizard found in Mexico, in the states of Coahuila, Nuevo Leon and Tamaulipas, and in the United States, in south-central Texas.
Common lesser earless lizard - There are nine recognized subspecies of Holbrookia maculata, many of which in the past held full species status:
Keel-scaled earless lizard - There are three recognized subspecies of Holbrookia propinqua: