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Emydidae (Latin emys (freshwater tortoise) + Ancient Greek εἶδος (eîdos, “appearance, resemblance”)) is a family of testudines (turtles) that includes close to 50 species in 12 extant genera. [3] [4] Members of this family are commonly called terrapins, pond turtles, or marsh turtles. [1]
It is monotypic, being represented by the single species, Myobatrachus gouldii, also known as the turtle frog. It gets its name from the resemblance to a shell-less chelonian, which is a type of turtle. It is described to have an extremely small narrow head, short limbs, and a round body. They can get up to 45 millimetres (1.8 in) long. [2]
In the UK, tortoises are land-dwellers, while turtles and terrapins are aquatic (terrapins are slightly fonder of the land than turtles). But in the US, turtle covers all three.
Pond turtles, terrapins, and sliders: Red-eared slider (Trachemys scripta elegans) Geoemydidae Theobald, 1868: 24: Asian leaf turtles, roofed turtles, and Asian box turtles: Amboina box turtle (Cuora amboinensis) Kinosternidae Agassiz, 1857: 4: Mud and musk turtles: Common musk turtle (Sternotherus odoratus) Platysternidae Gray, 1869 : 1: Big ...
Terrapins do not form a taxonomic unit and may not be closely related. Many belong to the families Geoemydidae and Emydidae. The name "terrapin" is derived from torope, a word in an Algonquian language [1] that referred to the species Malaclemys terrapin (the Diamondback terrapin). It appears that the term became part of common usage during the ...
Testudines (Turtles, tortoises & terrapins) An anapsid is an amniote whose skull lacks one or more skull openings (fenestra, or fossae) near the temples . [ 1 ] Traditionally, the Anapsida are considered the most primitive subclass of amniotes, the ancestral stock from which Synapsida and Diapsida evolved, making anapsids paraphyletic .
The word turtle is borrowed from the French word tortue or tortre 'turtle, tortoise'. [3] It is a common name and may be used without knowledge of taxonomic distinctions. In North America, it may denote the order as a whole. In Britain, the name is used for sea turtles as opposed to freshwater terrapins and land-dwelling tortoises. In Australia ...
The Japanese pond turtle (Mauremys japonica), also called commonly the Japanese pond terrapin and the Japanese pond tortoise, is a species of turtle in the family Geoemydidae endemic to Japan. Its Japanese name is nihon ishigame , Japanese stone turtle.