Turtles are reptiles of the order Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked turtles), which differ in the way the head retracts.

Well, actually, there’s a meaningful difference between tortoises and other turtles. All tortoises are in fact turtles—that is, they belong to the order Testudines or Chelonia, reptiles having bodies encased in a bony shell—but not all turtles are tortoises.

Everything you should know about the Turtle. The Turtle is an aquatic reptile that lives inside its shell. Some turtles live in the water, some venture out.

Find out about the ancient mariners' oldest known ancestor, how certain adaptations may have helped the reptiles survive, and the conservation efforts being made to save these creatures....more....

Sea turtles (superfamily Chelonioidea), sometimes called marine turtles, [3] are reptiles of the order Testudines and of the suborder Cryptodira. The seven existing species of sea turtles are the flatback, green, hawksbill, leatherback, loggerhead, Kemp's ridley, and olive ridley.

2023年6月5日 · Turtles possess the typical characteristics of reptiles, being cold-blooded, egg-laying, scaly-skinned, vertebrate animals that breathe air with lungs. Turtles are not amphibians; reptiles and amphibians are two different groups of animals.

4 天之前 · Turtle, any reptile with a body encased in a bony shell, including tortoises. The turtle shell has a top (carapace) and a bottom (plastron). The carapace and plastron are bony structures that usually join one another along each side of the body, creating a rigid skeletal box.