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Evolution of Vertebrates: The Rise and Fall of Early Reptiles and Dinosaurs

This lecture explores the fascinating evolution of vertebrates, focusing on early reptiles and the reign of dinosaurs. It discusses the dramatic mass extinction event caused by an asteroid impact and the subsequent global changes in climate. While many dinosaurs were lost to this extinction, some reptiles survived, adapting to new environments such as forests, swamps, and open habitats. The surviving lineages include crocodilians, turtles, tuataras, snakes, lizards, and the lineage that led to modern birds, showcasing the resilience and adaptability of reptilian life.

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Evolution of Vertebrates: The Rise and Fall of Early Reptiles and Dinosaurs

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  1. Lecture 6ANIMAL EVOLUTION: THE VERTEBRATES

  2. 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.

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