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