Internal fertilization, a leathery amniotic egg, and skin that resists drying are characteristics of ________.

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Internal fertilization, a leathery amniotic egg, and skin that resists drying are all characteristics of nonbird reptiles, such as snakes, lizards, turtles, and crocodilians. Amphibians lay jelly-like eggs in water, chondrichthyans (cartilaginous fish like sharks) have internal fertilization but lay eggs with a leathery or calcified casing, mammals have internal fertilization and give birth to live young, and birds have hard-shelled eggs and internal fertilization.

Internal Fertilization, a Leathery Amniotic Egg, and Skin That Resists