Emydidae
This family of turtles are found in North America. They have full bony shells and front necks. They have 12 pairs of marginals (+ nuchal), and they have 6 pairs of plastral scutes (= no intergular). They also have flattened feet.
Painted Turtle/ Chrysemys picta
This species of turtle has a smooth carapace that is uniformly dark and its posterior marginals are not notched. It has longitudinal light lines on the side of the head.
Spotted Turtle/Clemmys guttata
This species has a smooth carapace that is dark with small yellow spots. The posterior marginals not notched and the plastron is dark with a light center.
Chicken Turtle/ Deirochelys reticularia
This species has a smooth to slightly rough carapace. The carapace is dark with faint light "worm-tracks" and the posterior marginals are not notched. It has vertical light bands on rear surface of the thigh (= striped pants) and it has very long neck. It
Cagle's Map Turtle/ Graptemys caglei
This species has raised knobs on vertebrals on a carapace that is olive in color with faint light worm tracks. Its costals are not convex. Its postorbital spot is large and c-shaped with a dark-edged light bar often connecting to form a "V" on top of the
Common Map Turtle/ Graptemys geographica
This species has raised knobs on vertebrals on a carapace that is olive in color with faint light worm tracks. The costals are not convex. Its small spot behind the eye is isolated from the eye by 2-3 diagonal lines.
Ouachita Map Turtle/ Graptemys ouachitensis
This species has raised knobs on vertebrals on a carapace that is olive in color with faint light worm tracks. Its costals are not convex. Its postorbital blotch usually forms a wide crescent. They seldom more than 3 light lines contact orbit.
False Map Turtle/ Graptemys pseudogeographica
This species has raised knobs on vertebrals on a carapace that is olive in color with faint light worm tracks. Its costals are not convex. Its postorbital blotch is narrow and sometimes forming a thin crescent. It has up to 6 light lines that contact the
Texas Map Turtle/ Graptemys versa
This species has raised knobs on vertebrals on a carapace that is olive in color with faint light wormtracks. Its costals are convex. The postorbital line or spot terminates above the eye and extends back as a neck stripe. It's typically 3 or fewer light
Diamondback Terrapin/ Malaclemys terrapin
This species has a generally dark and rough carapace with distinct annuli. It has slightly raised knobs that may be present on vertebrals. Its head and limbs are spotted.
Eastern River Cooter/ Pseudemys concinna
This species has a smooth carapace that is olive in color with yellow markings. Its posterior marginals are slightly notched. Its plastron is plain yellow (occasionally some dark markings near margins of scutes). Its upper jaw has a medial notch (sometime
Texas River Cooter/ Pseudemys texana
This species has a smooth carapace that is olive in color with yellow markings.Its posterior marginals are slightly notched. Its plastron is plain yellow. Its upper jaw has a medial notch that is bordered by cusps.
Florida Box Turtle/ Terrapene bauri
This species of turtle has a carapace that is rough with annuli and has a high domed shell. It has a prominent beak. The plastron is generally light or dark (plain). Its carapace is dark with thin, yellow, radiating "star bursts". Its members usually have
Eastern Box Turtle/ Terrapene carolina
This species of turtle has a carapace that is rough with annuli and has a high domed shell. It has a prominent beak. Its plastron is generally light. Its carapace is dark with irregular light radii. It usually has no vertebral stripes. It has 4 toes on it
Three-toed Box Turtle/ Terrapene triunguis
This species of turtle has a carapace that is rough with annuli and has a high domed shell. It has a prominent beak. Its plastron is generally tan and its carapace is generally uniformly tan. They generally have 3 toes on their hind feet.
Ornate Box Turtle/ Terrapene ornata
This species of turtle has a carapace that is rough with annuli and has a high domed shell. It has a prominent beak. Its plastron is dark with yellow radiating "star bursts" and its carapace is dark with yellow radiating "star bursts." Its vertebral strip
Slider/ Trachemys scripta
This species has a smooth to slightly rough carapace. Its posterior marginals are often notched. Its carapace olive with lighter markings. It has a red ear stripe in western populations. Its plastron is light with large dark blotches near the centers of t
Testudinidae
This family is front necked. They have a full bony shell that has 11 pairs of marginals + 1 (+ nuchal). It has 6 pairs of plastral scutes (no intergular) and the feet are elephantine.
Texas Tortoise/ Gopherus berlandieri
This species has a high domed shell. They have a full bony shell that has 11 pairs of marginals + 1 (+ nuchal). It has 6 pairs of plastral scutes (no intergular) and the feet are elephantine. They do not have a plastral hinge. Their carapace and plastron