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Top view of the mata mata turtle. The mata mata is a large, sedentary turtle with a large, triangular, flattened head with many tubercles and flaps of skin, and a "spike" on its long and tubular snout. [9] Three barbels occur on the chin and four additional filamentous barbels at the upper jaw, which is neither hooked nor notched. [13]
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 colonial era of North America and was carried back to Great Britain.
Stupendemys skull. The skull of Stupendemys is roughly triangular in top view and the edges of the jaws converge at the front of the snout in a straight edge. The skull is dorsally extremely inflated by the prefrontals that make up a large area of the front region of the skull, forming a vertical wall above the bony nostril.
However, the name is retained regardless due to its importance for communication, making it easier to clarify which island's turtles are referred to. Furthermore, Gaffney concurs that it may have been a "biological species", meaning it could have been genetically distinct given the large distance between the Walpole population and those of New ...
Fossil of Rhinochelys nammourensis from Lebanon. As some of the first marine turtles, the protostegids set the general body plan for future species of sea turtles.They had a generally depressed turtle body plan, complete with four limbs, a short tail, and a large head at the end of a relatively short neck.
A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the underside is called the plastron.
Sternotherus is a genus of turtles in the family Kinosternidae including six species commonly known as musk turtles. The genus is endemic to North America, occurring in the eastern third of the US and southeast Ontario, Canada. Musk glands positioned near the bridge of the shell can produce foul smelling secretions when the turtles are ...
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]