Nathan Shepard:
Crotaphytus collaris
Nathan Shepard:
Crotaphytus collaris
Nathan Shepard:
Crotaphytus collaris
Nathan Shepard:
Crotaphytus collaris and I
Nathan Shepard:
Crotaphytus collaris
Nathan Shepard:
Crotaphytus collaris
Nathan Shepard:
Crotaphytus collaris fuscus
Nathan Shepard:
Crotaphytus collaris fuscus and habitat