. "Animalia" . . . "Squamata" . . "Crotalus lepidus" . . . . . "Reptilia" . "Viperidae" . "Rock Rattlesnake" . . "Crotalus" . "(Kennicott 1861)" . . . "Crotalus lepidus (Kennicott 1861)" . . . "Chordata" . .