Turtle shells are made mostly of bone; the upper part is the domed carapace, while the underside is the flatter plastron or belly-plate. Its outer surface is covered in scales made of keratin, the material of …

May 11, 2026 · A turtle is 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 …

Here at Nat Geo Kids we’re turt-ally mad about turtle – so we’ve put together these ten terrific turtle facts! These magnificent creatures come in all shapes and sizes and live in a number of different …

Sea turtles, along with other turtles and tortoises, are part of the order Testudines. All species except the leatherback sea turtle are in the family Cheloniidae. The superfamily name Chelonioidea and family …

Jun 12, 2026 · A turtle’s shell is typically made of 50 to 60 bones arranged into a dorsal, domed carapace and a ventral, flat plastron. 3 The latter is an assemblage of bones from the sternum, …

Green sea turtles are the world’s largest species of hard-shelled sea turtle. While most individuals weigh about 300 to 400 pounds (136 to 181 kilograms), some can be as heavy as 440 pounds (204 …

Jun 21, 2022 · 30 amazing types of turtles, from the land-dwelling desert tortoise Gopherus agassizii, to the mighty leatherback sea turtle Dermochelys coriacea, the world’s largest living turtle species.

Turtles Turtles (Testudines) are one of the most prominent reptile orders, characterized by their large bony shells that act as their primary defense mechanism. The head and limbs are retrieved within the …

May 11, 2026 · Turtle - Adaptations, Habitats, Lifespan: Turtles have adapted to a remarkable variety of environments, but the greatest number of species occurs in southeastern North America and South …

Feb 15, 2019 · Sea turtles have existed since the time of the dinosaurs. Find out about the ancient mariners' oldest known ancestor, how certain adaptations may have helped...