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Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES. The Early Reptiles. Dinosaurs – lost in the mass extinction. Mass extinction – hit of an asteroid; global broiling hypothesis. Some survived – evolved in forests, swamps & open habitats.
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The Early Reptiles • Dinosaurs – lost in the mass extinction. • Mass extinction – hit of an asteroid; global broiling hypothesis. • Some survived – evolved in forests, swamps & open habitats. • Reptiles that survived – crocodilians, turtles, tuataras, snakes and lizards as well as birds.