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REPTILIA        
Testudines
  Testudinidae
    ? Gopherus agassizii                   desert tortoise

  Kinosternidae
      Kinosternon sonoriense               sonoran mud turtle

Squamata
  Sauria
  Crotaphytidae
      Crotaphytus insularis bicincyores    desert (great basin) collared lizard 
    * Crotaphytus collaris baileyi         common (western) collared lizard 
    * Gambelia wislizenii wislizenii       longnose (large-spotted) leopard lizard

  Iguanidae
      Dipsosaurus dorsalis                 desert iguana
    * Sauromalus obesus obesus             common (western) chuckwalla

  Phrynosomatidae
    * Callisaurus draconoides              (common) zebra-tailed lizard
    * Holbrookia maculata                  lesser earless lizard
    * Cophosaurus texanus                  greater (sw) earless lizard
    * Phrynosoma platyrhinos calidiarum    (southern) desert horned lizard
      Phrynosoma solare                    regal horned lizard
      Phrynosoma douglassii                short-horned lizard
      Sceloporus clarkii                   clark spiny lizard
    * Sceloporus magister unifornis        desert (yellow-backed) spiny lizard
    * Sceloporus undulatus tristichus      eastern (so. plateau) fence lizard
    * Uta stansburiana stansburiana        side-blotched (northern) lizard
    * Urosaurus ornatus                    tree lizard
      Urosaurus graciosus shannoni         long-tailed (arizona) brush lizard

  Gekkonidae
      Coleonyx variegatus variegatus       desert banded gecko

  Xantusiidae
      Xantusia vigilis vigilis             desert (common) night lizard
      Xantusia vigilis arizonae            desert (arizona)night lizard

  Teiidae
      Cnemidophorus tigris tigris          western (great basin) whiptail
    * Cnemidophorus tigris gracilis        western (arizona desert) whiptail
      Cnemidophorus tigris septentrionalis western (painted desert) whiptail
      Cnemidophorus uniparens              desert grassland whiptail
      Cnemidophorus inornatus              little grassland whiptail
      Cnemidophorus flagellicaudus         gila spotted whiptail
    * Cnemidophorus velox                  plateau striped whiptail

  Scincidae
      Eumeces gilberti arizonensis         gilbert's (arizona) skink
      Eumeces obsoletus                    great plains skink
      Eumeces multivarigatus gaigeae       many-lined (variable) skink

  Anguidae
      Elgaria kingii                       madrean alligator lizard

  Helodermatidae
      Heloderma suspectus cinctum          (banded) gila monster

Serpentes 
  Leptotyphlopidae
      Leptotyphlops humilis                western blind snake

  Boidae
      Lichanura tirbirgata gracia          rosy (desert) boa

  Colubridae
      Arizona elegans noctivaga            (arizona) glossy snake
      Chionactis occipitalis occipitalis   western (mojave) shovel-nose snake
    * Diadophis punctatus regalis          (regal) ringneck snake
      Hypsiglena torquata                  (desert) night snake
      Lampropeltis getula californiae      common (california) kingsnake
      Lampropeltis pyromelana pyromelana   sonora (arizona) mountain kingsnake
      Lampropeltis triangulum taylori      (utah) milk snake
      Masticophis flagellum piceus         (red racer; red) coachwhip
      Masticophis taeniatus                striped whipsnake
      Masticophis bilineatus bilineatus    sonoran (sonoran mountain) whipsnake
      Phyllorhynchus decurtatus perkinsi   spotted (western) leaf-nosed snake
    * Pituophis melanoleucus affinis       (sonoran) gopher snake
      Rhinocheilus lecontei lecontei       (western) long-nosed snake
    * Salvadora hexalepis mojavensis       western (mojave) patch-nosed snake
      Salvadora hexalepis hexalepis        western (desert) patch-nosed snake
      Sonora semiannulata                  ground snake
      Tantilla hobartsmithi                southwestern black-headed snake
      Thamnophus elegans vagrans           w. terrestrial (wandering) garter snake
    * Thamnophus cyrtopsis                 black-necked garter snake
      Thamnophus rufipunctatus             narrow-headed garter snake
      Trimorphodon biscutatus lambda       (sonora) lyre snake

  Elapidae
      Micruroides euryxanthus              coral snake

  Viperidae
      Crotalus cerastes cerastes           (mojave desert) sidewinder
      Crotalus viridus cerberus            western (arizona) rattlesnake
    * Crotalus atrox                       western diamondback rattlesnake
    * Crotalus mitchellii pyrrhus          (southwestern) speckled rattlesnake
      Crotalus scutulatus                  mojave rattlesnake
      Crotalus molosus                     black-tailed rattlesnake
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AMPHIBIA        
Caudata
  Ambystomatidae
      Ambystoma tigrinum nebulosum         (arizona) tiger salamander

Anura
  Pelobatidae
      Scaphiopus multiplicatus             southern spadefoot

  Bufonidae
      Bufo alvarius                        sonoran desert toad
    * Bufo punctatus                       red-spotted toad
      Bufo microscaphus microscaphus       southwestern (arizona) toad
      Bufo cognatus                        great plains toad

  Hylidae
    * Hyla arenicolor                      canyon treefrog
      Hyla eximia                          mountain treefrog

  Ranidae
    * Rana yavapaiensis                    lowland leopard frog
      Rana catesbeiana                     bullfrog
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