Alabama Reptiles

Alabama Reptiles

Three orders of reptiles occur in Alabama:

1.Testudinata – the turtles.2.Crocodilia – the alligators3.Squamata – the snakes and

lizards.

Order TestudinataThe turtles have the body enclosed in a bony case of dermal plates with a dorsal

carapace and a ventral plastron. Their jaws have no teeth, but do

have a horny sheath. The vertebra and ribs are fused to

the shell. The anus is a longitudinal slit.

Family ChelydridaeThe snapping turtles are among the largest freshwater turtles.

They are characterized by massive heads with powerful

hooked jaws, long tails, relatively small, cross-shaped plastrons, and carapaces with 12 marginal scutes on each

side.

Chelydra serpentina – common snapping turtle

Macroclemmys temmincki – Alligator snapping turtle

Family EmydidaeThe emydids are the world’s largest family of turtles. They have a large

plastron and a short tail. The plastron has twelve marginal scutes, with the

pectoral scutes touching the marginals.

Chrysemys picta – the southern painted turtle

Deirochelys reticularia – eastern chicken turtle

Graptemys pulchra – Alabama map turtle

Graptemys nigrinoda – black-knobbed sawback

Pseudomys concinna – river cooter

Trachemys scripta – pond slider

Terrapene carolina – box turtle

Family KinosternidaeThe mud and musk turtles. The

kinosternids have a large plastron with ten or eleven

scutes. The pectorals of the plastron are not in contact with

the marginals.

Kinosternon subrubrum – eastern mud turtle

Sternotherus minor – loggerhead musk turtle

Sternotherus odoratus – common musk turtle (stinkpot)

Family TestudinaeThe tortoises are terrestrial, with elephantine hind feet.

Their forelimbs are shovel-like and are adapted for digging.

Gopherus polyphemus – gopher tortoise

A gopher tortoise burrow. Gopher tortoises can serve as keystone species in longleaf pine habitats.

Family TrionychidaeThe soft-shelled turtles have a shell covered with a leathery

skin. The snout ends in a tubular proboscis. They are

highly aquatic.

Apalone spiniferus – spiny softshell

The only sea turtle that commonly nexts along Alabama’s beaches is the loggerhead, Caretta

caretta, which belongs to the family Cheloniidae.

Order CrocodiliaLarge and well-armored, with sculptured

heads, protruding nostrils, and well-muscled, compressed tails. Front feet have five toes, while webbed hind feet have four toes. Ear is covered with a

movable flap. All are aquatic carnivores. Males tend to grow larger than females.

Alligator mississippiensis – American alligator

In much of their range, alligators serve as a keystone species much like the gopher tortoise.

Distribution of Alligator mississipiensis

Spectacled caimanCaiman crocodilus

Natural distribution of spectacled caimans

American crocodile – Crocodylus acutus

American crocodile distribution

The Daily Beacon Online - Alligator attacks woman

http://www.ecofloridamag.com/alligatorattacks.pdf

Ananova - Alligator suspected of killing toddler

FOXNews.com - Florida Woman Loses Part of Arm to Alligator Attack

Tampabay: Gator attack ends protection on island

Alligators are dangerous animals.

Order SquamataSuborder Lacertilia

The LizardsTwo pairs of relatively equal legs, long

tail. Superficially resemble salamanders, but have dry, scaly skin, toothed jaws,

and external ear openings. Some 3,000 species worldwide.

Family AnguidaeEleven general of about 80 species.

Anguid lizards have elongate, shiny, stiff bodies and tails. Tiny or absent legs.

Stiffness results from abundance of body armor in skin. Many species are so stiff

that they could not breathe if not for flexible lengthwise groove of soft,

granular scales along sides. Most are terrestrial and burrowing. In some

species, the tail vertebrae have fracture planes.

Ophisaurus attenuatus – slender glass lizard

Ophisaurus ventralis – eastern glass lizard

Family IguanidaeA large family of moderately sized

lizards. Have five clawed toes on each of four legs, and a long tail. Most

species either arboreal or terrestrial. Highly visually oriented.

Anolis carolinensis – green anole

A green anole displays its dewlap.

An exotic – the Caribbean brown anole, Anolis sagrei

Sceloporus undulatus – eastern fence lizard

While I’m thinking about it, here’s another exotic that is becoming increasingly common. It’s in the Family Gekkonidae.

Hemidactylus turcicus – Mediterranean house gecko

Family ScincidaeCosmopolitan group of 87 genera and 1280 species found on every continent except Antarctica. 15 species in U.S.

Typically has a cylindrical body and tail covered by smooth, sleek scales. Terrestrial skinks have small legs.

Fracture planes in tails allow the tail to break off. In such cases, the tail is usually brightly colored. Diurnal.

Eumeces fasciatus

Five-lined skink

Eumeces inexpectans – southeastern five-lined skink

Eumeces laticeps – broad-headed skink

Scincella laterale – ground skink

Family TeiidaeForty genera of about 230 species confined to the New World. Long,

slender lizards with long whiplike tails and well-developed leggs. Movements

characteristically rapid and jerky. Typically have small, round, non-

overlapping scales on the back and large, rectangular scales on the belly.

Diurnal, terrestrial carnivores.

Cnemidophorus sexlineatus – six-lined racerunner

Superorder SerpentesSnakes

Some 2700 species. Found on all continents except Antarctica. Elongated

scaly body with no limbs, external ear openings, or eyelids. Periodically shed outer layer of skin. Of the 115 species that may be seen north of Mexico, 17

species are venomous.

Family ColubridaeLargest of all snake families. Head generally as wide as or wider than the neck, with large

and regularly arranged scales. Eyes well developed with round or vertical pupils. Back scales may be smooth or keeled. Scales on

underside of tail usually divided. Teeth present on both jaws, but no hollow, poison-injecting fangs. Habitats highly variable. All devour whole animals. Most are egg-layers, but some have live young. Males tail usually

longer and thicker at base than female.

Carphophis amoenus – worm snake

Cemophora coccinea – northern scarlet snake

Coluber constrictor – black racer

Diadophis punctatus – southern ringneck snake

Elaphe guttata – corn snake

Elaphe obsoleta spiloides – grey rat snake

Elaphe obsoleta obsoleta – black rat snake

Farancia abacura

Western mud snake

Farancia erytrogramma – rainbow snake

Heterodon platyrhinos

Eastern hognose snake

Lampropeltis getula getula – eastern kingsnake

Lampropeltis getula holbrooki – speckled kingsnake

Lampropeltis triangulum triangulum – eastern milk snake

Lampropeltis triangulum elapsoides – scarlet king snake

Masticophis flagellum – eastern coachwhip

Nerodia erythrogaster flavipesYellow-bellied water snake

Nerodia rhombifer – diamond-backed water snake

Note the pattern of alternating lateral and dorsal blotches

Nerodia sipedon – midland water snake

Brown water snake

Nerodia taxispilota

Opheodrys aestivus – rough green snake

Regina rigida – glossy crawfish snake

Regina septemvitatta

Queen snake

Storeria dekayi - brown snake

Storeria occipitomaculatus - red-bellied snake

Tantilla coronata – southeastern crowned snake

Thamnophis sauritus – eastern ribbon snake

Thamnophis sirtalis – eastern garter snake

Family ElapidaeIncludes coral snakes, cobras, kraits,

mambas and others. Enlarged grooved fangs are fixed in position on

the front part of the upper jaw and cannot be folded back. Venom is

strongly neurotoxic.

Micrurus fulvius

Coral snake

Family ViperidaeIncludes many dangerously venomous

snakes. Most are stout-bodied, with heads distinctly wider than the neck. Most are

patterned with crossbands or blotches. Have hollow, retractable fangs situated near the

front of the upper jjaw. In pit vipers, a heat-sensitive pit is present on each side of the

head between the eye and the nostril. Eyes have vertical pupils and an undivided row of scales under the tail. Venom is a complex

mix of proteins acting primarily on the victim’s blood tissue. Most pit vipers bear

their young alive.

The pit organ is located on each side of the head between the eye and the nostril.

Agkistrodon contortrix - copperhead

Agkistrodon piscivorus – eastern cottonmouth

The common name of the cottonmouth comes from the white interior of the mouth.

Juvenile cottonmouths and copperheads have a yellow-green tail that they use as a lure.

Crotalus horridus – timber rattlesnake

Crotalus adamanteus – eastern diamondback rattlesnake

Sistrurus miliarius – pigmy rattlesnake

The top of the diamondback’s head is covered by small scales….

While the pigmy rattlesnake has large plates.

Try this snake quiz.

Florida Snake Quiz