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Reptiles, as commonly defined, are a group of tetrapods with an ectothermic ('cold-blooded') metabolism and amniotic development. Living reptiles comprise four orders: Testudines , Crocodilia (crocodilians), Squamata (lizards and snakes), and Rhynchocephalia (the tuatara).
Reptiles are air-breathing vertebrates covered in special skin made up of scales, bony plates, or a combination of both. They include crocodiles, snakes, lizards, turtles, and tor- toises.
Reptiles are animals in the class Reptilia. Unlike most amphibians, reptiles evolved the ability to complete their life cycle away from water, giving them an advantage that allowed them to thrive in a wider range of habitats. All reptiles are vertebrates that breathe air with lungs.
A reptile is any member of the class Reptilia, the group of air-breathing vertebrates that have internal fertilization, amniotic development, and epidermal scales covering part or all of their body. The major groups of living reptiles are turtles, tuatara, lizards, snakes, and crocodiles.
Definition. Reptiles are cold-blooded, scaly vertebrates that belong to the class Reptilia. They are distinguished from other vertebrates by specific physical and physiological traits. While mammals and birds are warm-blooded, reptiles rely on external sources to regulate their body temperature.
What are reptiles? The reptiles are a class of cold-blooded animals characterized by rough skin and egg-laying. It is only one of three vertebrate classes, along with mammals and birds, that have an amnion, or an inner sac, during the embryonic stage of development.
Reptiles are cold-blooded vertebrates. (Vertebrates have backbones.) They have dry skin covered with scales or bony plates and usually lay soft-shelled eggs.
Reptiles existed well before any of the mammals we know today. Currently, there are four main types of reptiles: the turtles and tortoises, lizards and skinks, snakes, and crocodiles and alligators. In this article, we’ll explore 25 examples of reptiles with pictures and facts.
A complete guide to reptiles. Everything you need to know about living and extinct reptiles. reptile evolution, life cycle, modern reptile types. Are birds reptiles? Crocodiles, turtles, snakes, lizards, tuataras, classification, Mesozoic Era, dinosaurs and much more ...
reptile, Any of the approximately 8,700 species of the class Reptilia, the group of air-breathing vertebrates that have internal fertilization and a scaly body and are cold-blooded. Most species have short legs (or none) and long tails, and most lay eggs.