The tortoises are four-legged scaly animals belonging to the reptile. The so-called Testudinata (or Chelonians) animal species is distinctive and easily recognizable by the harsh and rigid 'house' or shell (bony shell).
This tortoise shell consists of two parts. The top that covers the back is called the carapace and the bottom (ventral, abdomen) is called the plastron. Then each part is composed of two layers. The outer layers are generally large and hard scales, and are arranged like tiles; While the inner layer of bone plates are arranged tightly like a shell. Exceptions are in the group of labi-labi (Trionychoidea) and the type of leatherback turtle, whose outer layer is scaly and replaced by a layer of skin on the outside of the bone shell.
In Indonesian, we recognize three groups of animals that belong to this nation, namely turtles (English: sea turtles), freshwater turtles, and tortoises. In English, it is distinguished between land tortoises and freshwater tortoises or terrapins.!
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