Chelonia - Turtles
CHELYDRIDAE - SNAPPING TURTLES
Chelydria serpentina - Common Snapping Turtle Macrochelys temminckii - Alligator Snapping
EMYDIDAE - TURTLES
Chrysemys dorsalis - Southern Painted Turtle Chrysemys picta - Northern Painted Turtle Deirochelys reticularia - Chicken Turtle Emydoidea blandingii - Blanding's Turtle Glyptemys insculpta - Wood Turtle Graptemys caglei - Cagle's Map Turtle Graptemys geographica - Common Map Turtle Graptemys ouachitensis - Ouachita Map Turtle Graptemys pseudogeographica - False Map Turtle Graptemys sabinensis - Sabine Map Turtle Graptemys versa - Texas Map Turtle Pseudemys concinna - Eastern River Cooter Pseudemys gorzugi - Rio Grande Cooter Pseudemys floridana - Florida Cooter Pseudemys nelsoni - Florida Red-bellied Turtle Pseudemys texana - Texas River Cooter Terrapene carolina - Eastern Box Turtle Terrapene ornata - Ornate Box Turtle Trachemys gaigeae - Big Bend Slider Trachemys scripta - Pond Slider
KINOSTERNIDAE - MUD AND MUSK TURTLES
Kinosternon flavescens - Yellow-necked Mud Turtle Kinosternon hirtipes - Mexican Mud Turtle Kinosternon sonoriense - Sonoran Mud Turtle Kinosternon subrubrum - Eastern Mud Turtle Sternotherus carinatus - Razor-backed Musk Turtle Sternotherus minor - Loggerhead Musk Turtle Sternotherus odoratus - Stinkpot
TESTUDINIDAE - TORTOISES
Gopherus berlandieri - Texas Tortoise Gopherus polyphemus - Gopher Tortoise
TRIONYCHIDAE - SOFTSHELLS
Apalone ferox - Florida Softshell Apalone mutica - Smooth Softshell Apalone spinifera - Spiny Softshell
Eusuchia - Crocodilians
ALLIGATORIDAE - ALLIGATOR
Alligator mississipiensis - American Alligator Caiman crocodilus - Spectacled Caiman
Squamata - Lizards
ANGUIDAE - ALLIGATOR LIZARDS
Elgaria kingii - Madrean Alligator Lizard Elgaria multicarinata - Southern Alligator Lizard Gerrhonotus infernalis - Texas Alligator Lizard Ophisaurus attenuatus - Slender Glass Lizard Ophisaurus compressus - Island Glass Lizard Ophisaurus ventralis - Eastern Glass Lizard
CROTAPHYTIDAE - COLLARED AND LEOPARD LIZARDS
Crotaphytus collaris - Eastern Collared Lizard Crotaphytus reticulatus - Reticulate Collared Lizard Gambelia wislizenii - Long-nosed Leopard Lizard
GEKKONIDAE - GECKOS
Coleonyx brevis - Texas Banded Gecko Coleonyx reticulatus - Reticulated Gecko Coleonyx variegatus - Western Banded Gecko Cyrtopodion scabrum - Rough-tailed Gecko Hemidactylus garnotii - Indo-Pacific Gecko Hemidactylus mabouia - Tropical Gecko Hemidactylus turcicus - Mediterranean Gecko
HELODERMATIDAE - GILA MONSTERS
Heloderma suspectum - Gila Monster
IGUANIDAE - IGUANIDS
Ctenosaura pectinata - Mexican Spiny-tailed Iguana Dipsosaurus dorsalis - Desert Iguana Sauromalus ater - Chuckwalla
PHRYNOSOMATIDAE - PHRYNOSOMATIDS
Callisaurus draconoides - Zebra-tailed Lizard Cophosaurus texanus - Greater Earless Lizard Holbrookia elegans - Canyon Earless Lizard Holbrookia lacerata - Spot-tailed Earless Lizard Holbrookia maculata - Lesser Earless Lizard Holbrookia propinqua - Keeled Earless Lizard Phrynosoma cornutum - Texas Horned Lizard Phrynosoma hernandesi - Mountain Short-horned Lizard Phrynosoma modestum - Round-tailed Horned Lizard Phrynosoma platyrhinos - Desert Horned Lizard Phrynosoma solare - Regal Horned Lizard Sceloporus arenicolus - Dunes Sagebrush Lizard Sceloporus clarkii - Clark's Lizard Sceloporus consobrinus - Prairie Lizard Sceloporus graciosus - Sagebrush Lizard Sceloporus grammicus - Mesquite Lizard Sceloporus jarrovii - Yarrow's Spiny Lizard Sceloporus magister - Desert Spiny Lizard Sceloporus merriami - Canyon Lizard Sceloporus occidentalis - Western Fence Lizard Sceloporus olivaceus - Texas Spiny Lizard Sceloporus poinsettii - Crevice Spiny Lizard Sceloporus serrifer - Blue Spiny Lizard Sceloporus slevini - Bunch Grass Lizard Sceloporus tristichus - Northern Plateau Lizard Sceloporus undulatus - Eastern Fence Lizard Sceloporus variabilis - Rose-bellied Lizard Sceloporus virgatus - Striped Plateau Lizard Sceloporus woodi - Florida Scrub Lizard Urosaurus graciosus - Western Brush Lizard Urosaurus ornatus - Tree Lizard Uta stansburiana - Side-blotched Lizard
POLYCHROTIDAE - ANOLIDS
Anolis carolinensis - Green Anole Anolis sagrei - Brown Anole
SCINCIDAE - SKINKS
Plestiodon anthracinus - Coal Skink Plestiodon callicephalus - Mountain Skink Plestiodon egregius - Mole Skink Plestiodon fasciatus - Five-lined Skink Plestiodon gilberti - Gilbert's Skink Plestiodon inexpectatus - Southeastern Five-lined Skink Plestiodon laticeps - Broad-headed Skink Plestiodon multivirgatus - Many-lined Skink Plestiodon obsoletus - Great Plains Skink Plestiodon septentrionalis - Prairie Skink Plestiodon tetragrammus - Four-lined Skink Scincella lateralis - Ground Skink
TEIIDAE - TEIDS
Aspidoscelis burti - Canyon Spotted Whiptail Aspidoscelis dixoni - Gray-checkered Whiptail Aspidoscelis exsanguis - Chihuahuan Whiptail Aspidoscelis flagellicauda - Gila Spotted Whiptail Aspidoscelis gularis - Texas Spotted Whiptail Aspidoscelis inornata - Little Striped Whiptail Aspidoscelis laredoensis - Laredo Striped Whiptail Aspidoscelis marmorata - Marbled Whiptail Aspidoscelis septemvittata - Plateau Spotted Whiptail Aspidoscelis sexlineata - Six-lined Racerunner Aspidoscelis sonorae - Sonoran Spotted Whiptail Aspidoscelis tesselata - Checkered Whiptail Aspidoscelis tigris - Western Whiptail Aspidoscelis uniparens - Desert Grassland Whiptail Aspidoscelis velox - Plateau Striped Whiptail
XANTUSIIDAE - NIGHT LIZARDS
Xantusia vigilis - Night Lizard
Squamata - Snakes
BOIDAE - BOIDS
Charina bottae - Rubber Boa Lichanura trivirgata - Rosy Boa
COLUBRIDAE - COLUBRIDS
Arizona elegans - Eastern Glossy Snake Arizona occidentalis - Western Glossy Snake Bogertophis subocularis - Trans-Pecos Rat Snake Cemophora coccinea - Scarlet Snake Chilomeniscus stramineus - Western Sand Snake Chionactis occipitalis - Western Shovel-nosed Snake Coluber constrictor - Racer Drymarchon melanurus - Western Indigo Snake Drymobius margaritiferus - Speckled Racer Ficimia streckeri - Mexican Hook-nosed Snake Gyalopion canum - Western Hook-nosed Snake Lampropeltis alterna - Gray-banded Kingsnake Lampropeltis calligaster - Prairie Kingsnake Lampropeltis getula - Common Kingsnake Lampropeltis pyromelana - Sonoran Mountain Kingsnake Lampropeltis triangulum - Milk Snake Lampropeltus zonata - California Mountain Kingsnake Masticophis bilineatus - Sonoran Whipsnake Masticophis flagellum - Coachwhip Masticophis lateralis - Striped Racer Masticophis schotti - Schott's Whipsnake Masticophis taeniatus - Striped Whipsnake Opheodrys aestivus - Rough Green Snake Opheodrys vernalis - Smooth Green Snake Pantherophis bairdi - Baird's Rat Snake Pantherophis emoryi - Great Plains Rat Snake Pantherophis guttatus - Corn Snake Pantherophis obsoletus - Common Rat Snake Pantherophis vulpinus - Western Fox Snake Phyllorhynchus browni - Saddled Leaf-nosed Snake Phyllorhynchus decurtatus - Spotted Leaf-nosed Snake Pituophis catenifer - Gopher Snake Pituophis melanoleucus - Eastern Pine Snake Pituophis ruthveni - Louisiana Pine Snake Rhinocheilus lecontei - Long-nosed Snake Salvadora deserticola - Big Bend Patch-nosed Snake Salvadora grahamiae - Eastern Patch-nosed Snake Sonora semiannulata - Ground Snake Tantilla coronata - Southeastern Crowned Snake Tantilla cucullata - Big Bend Black-headed Snake Tantilla gracilis - Flat-headed Snake Tantilla hobartsmithi - Southwestern Black-headed Snake Tantilla nigriceps - Plains Black-headed Snake Tantilla wilcoxi - Chihuahuan Black-headed Snake Trimorphodon lambda - Sonoran Lyre Snake Trimorphodon vilkinsonii - Chihuahuan Lyre Snake
CROTALIDAE - CROTALIDS
Agkistrodon contortrix - Copperhead Agkistrodon piscivorus - Cottonmouth Crotalus adamanteus - Eastern Diamondback Rattlesnake Crotalus atrox - Western Diamondback Rattlesnake Crotalus cerastes - Sidewinder Crotalus cereberus - Arizona Black Rattlesnake Crotalus concolor - Midget Faded Rattlesnake Crotalus horridus - Timber Rattlesnake Crotalus lepidus - Rock Rattlesnake Crotalus mitchellii - Speckled Rattlesnake Crotalus molossus - Black-tailed Rattlesnake Crotalus pricei - Twin-spotted Rattlesnake Crotalus scutulatus - Mohave Rattlesnake Crotalus tigris - Tiger Rattlesnake Crotalus viridis - Prairie Rattlesnake Crotalus willardi - Ridge-nosed Rattlesnake Sistrurus catenatus - Massasauga Sistrurus miliarius - Pigmy Rattlesnake
DIPSADIDAE - DIPSADIDS
Carphophis amoenus - Eastern Worm Snake Carphophis vermis - Western Worm Snake Coniophanes imperialis - Black-striped Snake Diadophis punctatus - Ring-necked Snake Hypsiglena torquata - Night Snake Rhadinaea flavilata - Pine Woods Snake
ELAPIDAE - ELAPIDS
Micruroides euryxanthus - Western Coral Snake Micrurus fulvius - Eastern Coral Snake Micrurus tener - Texas Coral Snake
LEPTOTYPHLOPIDAE - BLIND SNAKES
Leptotyphlops dulcus - Texas Blind Snake Leptotyphlops humilis - Western Blind Snake
NATICIDAE - WATER AND GARTER SNAKES
Nerodia clarkii - Salt Marsh Snake Nerodia cyclopion - Mississippi Green Water Snake Nerodia erythrogaster - Plain-bellied Water Snake Nerodia fasciata - Southern Water Snake Nerodia floridana - Florida Green Water Snake Nerodia harteri - Brazos Water Snake Nerodia rhombifer - Diamondback Water Snake Nerodia sipedon - Northern Water Snake Nerodia taxispilota - Brown Water Snake Regina grahamii - Graham's Crayfish Snake Regina rigida - Glossy Crayfish Snake Regina septemvittata - Queen Snake Seminatrix pygaea - Black Swamp Snake Storeria dekayi - Brown Snake Storeria occipitomaculata - Red- bellied Snake Thamnophis couchii - Western Aquatic Garter Snake Thamnophis cyrtopsis - Black-necked Garter Snake Thamnophis elegans - Western Terrestrial Garter Snake Thamnophis marcianus - Checkered Garter Snake Thamnophis proximus - Western Ribbon Snake Thamnophis radix - Plains Garter Snake Thamnophis rufipunctatus - Narrow-headed Garter Snake Thamnophis sauritus - Eastern Ribbon Snake Thamnophis sirtalis - Common Garter Snake Tropidoclonion lineatum - Lined Snake Virginia striatula - Rough Earth Snake Virginia valeriae - Smooth Earth Snake
XENODONTIDAE - XENODONTS
Farancia abacura - Mud Snake Farancia erytrogramma - Rainbow Snake Heterodon nasicus - Western Hog-nosed Snake Heterodon platirhinos - Eastern Hog-nosed Snake