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Animals & Nature
turtle
reptile
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Category:
Animals & Nature
- Related Topics:
- sea turtle snake-necked turtle side-necked turtle pond turtle Cryptodira
Top Questions
What are turtles?
What are turtle shells made of?
Where do turtles live?
What do turtles eat?
How do turtle eggs hatch?
What’s the difference between a turtle and a tortoise?
turtle, (order Testudines), any reptile with a body encased in a bony shell, including tortoises. Although numerous animals, from invertebrates to mammals, have evolved shells, none has an architecture like that of turtles. 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. This box, composed of bone and cartilage, is retained throughout the turtle’s life. Because the shell is an integral part of the body, the turtle cannot exit it, nor is the shell shed ...(100 of 5452 words)