Which class of vertebrate includes those with dry scaly skin and four legs?

The class of vertebrates that includes those with dry, scaly skin and four legs is called Reptilia, or reptiles. This class encompasses various species such as snakes, lizards, turtles, and crocodiles. Reptiles are ectothermic and primarily inhabit terrestrial environments, although some species are adapted to aquatic lifestyles. Their scaly skin helps prevent water loss, making them well-suited for dry habitats.