Packet 1: Tossup 3

This class includes the subfamily Anguinae, whose members like the slow worm (15[1])can be distinguished from similar organisms by the presence of external ear openings. This (-5[1])class contains the most prevalent (0[1])animals with parietal (“puh-RYE-uh-tul”) third eyes, (15[1])including a “living fossil” species (15[1])called (-5[1])the tuatara. (15[1]-5[2])This non-mammalian class contains the (15[1])animal (15[2])with (15[1])the strongest measured (*) bite force. An extinct (10[1])order in this class (-5[1])that was the first (-5[2])group of vertebrates (10[1])to evolve powered flight was the pterosaurs (“TAIR-uh-sores”). For 10 points, name this class of (-5[1])vertebrates that includes crocodilians, (10[3]-5[1])snakes, and lizards. (10[1])■END■ (10[10])

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