Definition
Chelonia is the order that encompasses all turtles, tortoises, and terrapins. These reptiles are characterized by their distinctive bony shells, which provide protection and support. Turtles have existed for over 200 million years, making them one of the oldest reptile groups. They inhabit diverse environments, from oceans to deserts. Their shells are formed from fused ribs and vertebrae. Chelonia exhibits a wide range of sizes and diets.