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Softshell turtles: Spiny softshell turtle (Apalone spinifera) Pleurodira – 3 families, 16 genera, over 60 species Family Genera Common names Example species Example image Chelidae Gray, 1831 : 15: Austro-American sideneck turtles: Common snakeneck turtle (Chelodina longicollis) Pelomedusidae Cope, 1868 : 2: Afro-American sideneck turtles
Common snapping turtles have few predators when older, but eggs are subject to predation by crows, American mink, skunks, foxes, and raccoons. [19] Egg predators use three types of cues to locate turtle nests: Visual cues – seeing where the female has dug the soil for the nest chamber and seeing the turtle
Other sea turtle species are smaller, ranging from as little as 60 cm (2 ft) long in the case of the Kemp's ridley, which is the smallest sea turtle species, to 120 cm (3.9 ft) long in the case of the green turtle, the second largest. [5] [12] The skulls of sea turtles have cheek regions that are enclosed in bone.
The necks of turtles are highly flexible, possibly to compensate for their rigid shells. Some species, like sea turtles, have short necks while others, such as snake-necked turtles, have long ones. Despite this, all turtle species have eight neck vertebrae, a consistency not found in other reptiles but similar to mammals. [31]
This category contains articles about the family in the order Testudines - the turtles. For individual species, see the appropriate subcategories. For individual species, see the appropriate subcategories.
Turtles of North America. Turtles , tortoises , and terrapins native to terrestrial−land , freshwater , and coastal marine ecosystems and habitats of North America , including in the sub-bioregions of Central America and the Caribbean .
The pond slider (Trachemys scripta) is a species of common, medium-sized, semiaquatic turtle.Three subspecies are described, [2] the most recognizable of which is the red-eared slider (T. s. elegans), which is popular in the pet trade and has been introduced to other parts of the world by people releasing it to the wild.
Graptemys is a genus of freshwater turtles containing 14 species, commonly known as map turtles. [5] Graptemys are small to medium-sized turtles that are significantly sexually dimorphic, with females in some species attaining as much as twice the length and ten times the mass as males.