Nathan Shepard:
Crotalus lepidus klauberi
Nathan Shepard:
Crotalus molossus subsp.
Nathan Shepard:
Crotalus willardi silus
Nathan Shepard:
Craugastor tarahumaraensis
Nathan Shepard:
Thamnophis eques
Nathan Shepard:
Lampropeltis knoblochi
Nathan Shepard:
Crotalus lepidus klauberi
Nathan Shepard:
Phrynosoma hernandesi
Nathan Shepard:
Thamnophis cyrtopsis
Nathan Shepard:
Crotalus tigris
Nathan Shepard:
Crotalus atrox
Nathan Shepard:
Bufo mexicanus
Nathan Shepard:
Pituophis deppei deppei