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Type of Reptiles

Type of Reptiles
Reptiles, the class Reptilian, are an evolutionary grade of animals, comprising today's turtles, crocodilians, snakes, lizards and tuatara, as well as many extinct groups. A reptile is any amniotes a tetrapod whose egg has an additional membrane, originally to allow them to lay eggs on land that is neither a mammal nor a bird.
Advocates of phylogenetic nomenclature regard the traditional category 'Reptilians' to be invalid, because not all...