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 …

5 days ago · 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 …

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 …

Apr 8, 2026 · Turtles, like other reptiles, are ectothermic or cold-blooded, which means that their body temperature changes with their surroundings.

Oregon's native turtles are in trouble. Invasive, non-native turtles such as the red-eared slider and snapping turtle compete with Oregon's turtles for food, habitat and nesting sites. Our native turtles …

Jan 19, 2026 · A turtle’s shell is typically made of 50 to 60 bones arranged into a dorsal, domed carapace and a ventral, flat plastron. The latter is an assemblage of bones from the sternum, …

Jul 15, 2025 · Turtles – the only vertebrate with a shell – range from tiny swimmers to huge, ancient land dwellers.

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.

Turtle, tortoise, and terrapin: what's the difference? All turtles, tortoises, and terrapins are reptiles. Scientists often refer to them as chelonians, because they are in the taxonomic order called Chelonia …

Mar 29, 2026 · This guide covers 15 remarkable turtle facts including the oldest recorded turtle (188 years), their unique skeletal structure, incredible navigation abilities, and surprising adaptations. …