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Cryptodira is commonly called the "Hidden-Neck Turtles" or the "Inside-Neck Turtles". Cryptodira differ from Pleurodira (side-necked turtles) in that they lower their necks and pull the heads straight back into the shells, instead of folding their necks sideways along the body under the shells' marginals.
The Asian forest tortoise (Manouria emys), also known commonly as the Mountain tortoise or Burmese Brown Mountain tortoise, is a species of tortoise in the family Testudinidae. The species is endemic to Southeast Asia. It is believed to be among the most primitive of living tortoises, based on molecular and morphological studies.
Testudinoidea is a superfamily within the suborder Cryptodira of the order Testudines. It includes the pond turtles (Family: Emydidae), Asian turtles (Family: Geoemydidae), the monotypic big-headed turtle (Family: Platysternidae), and the tortoises (Family: Testudinidae).
Belly of the Egyptian tortoise. Kleinmann's tortoise is the smallest tortoise in the Northern Hemisphere. [5] Females are larger than males; males are more slender and have a longer tail. [6] The carapace has a high dome, and ranges in color from ivory to pale gold to dark brown to pink or dull yellow. [6]
The angulate tortoise (Chersina angulata) is a species of tortoise found in dry areas and coastal scrub vegetation in South Africa. It is the only living member of the genus Chersina . 1830s illustration, under the synonym " Testudo angulata "
The pancake tortoise has an unusually thin, flat, flexible shell, which is up to 17.8 centimetres (7.0 in) long. [6] [7] While the shell bones of most other tortoises are solid, the pancake tortoise has shell bones with many openings, making it lighter and more agile than other tortoises. [8]
The Galápagos tortoise or Galápagos giant tortoise (Chelonoidis niger) is a very large species of tortoise in the genus Chelonoidis (which also contains three smaller species from mainland South America). The species comprises 15 subspecies (13 extant and 2 extinct).
Tortoise fossils were described but not named from the crater in 1935. [2] Four further bones from a private collector supposed to have been found in the same crater were described in 1998 as a new species similar to the extant Testudo calcarata (= Centrochelys sulcata ), differentiated from C. sulcata by its smaller size and lesser robusticity.