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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
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]
Classification: Animals: Chordates: Vertebrates: Tetrapods: Reptiles: Turtles This category contains articles about the family in the order Testudines - the turtles. For individual species, see the appropriate subcategories.
In order to be considered fully domesticated, most species have undergone significant genetic, behavioural and morphological changes from their wild ancestors, while others have changed very little from their wild ancestors despite hundreds or thousands of years of potential selective breeding. A number of factors determine how quickly any ...
The following list of reptiles lists the vertebrate class of reptiles by family, spanning two subclasses. Reptile here is taken in its traditional ( paraphyletic ) sense, and thus birds are not included (although birds are considered reptiles in the cladistic sense).
Turtles have been classified in different ways by different authors. While they were previously considered anapsids , they are now considered more derived. [ 1 ] Recent analyses of molecular evidence have strongly suggested that they belong in the clade Archosauromorpha (also known as Archelosauria). [ 2 ]
Common Name(s) Scientific name Distribution Notes African spurred tortoise or Sulcata tortoise: Centrochelys sulcata: southern edge of the Sahara Desert: Third largest species of tortoise in the world; the largest non-island species. [1] African helmeted turtle Marsh terrapin: Pelomedusa subrufa: Very wide range Aldabra giant tortoise ...
Common names are given but may vary, as they have no set meaning. Prior to the 2000s, all members of this group were classified as subspecies in a single species, Chelonoidis niger. From the 2000s until 2021, the individual subspecies were instead classified as distinct species. [6]