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Chapter 9: Marine Reptiles, Birds, and Mammals

Chapter 9: Marine Reptiles, Birds, and Mammals. Vertebrates 350 m.y.a. vertebrates invaded land Decendents of bony fish Land vertebrates had to adapt to harsher conditions on shore Tetrapods had to develop lungs that allowed for absorption of oxygen directly from air.

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1.69k views • 71 slides

Marine Mammals

Marine Mammals. What is a Mammal?. Mammals have a 4 chambered heart. Mammals are warm-blooded. They have hair/fur. Have mammary glands. Give birth to live young. Pinnepeds. Ex: Seals, Walruses, Sea Lions. Marine mammals that have flippers and blubber Need to breed on land.

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682 views • 28 slides

Marine Mammals

Marine Mammals. The Charismatic Megafauna. Tetrapod Invasion. 350 mya vertebrates invaded land Dealt with multiple stresses on land lost structural support from water Breathe air Desiccation. Led to new adaptations

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221 views • 9 slides

Seals, Sea Lions, and Walrus

Seals, Sea Lions, and Walrus. Members of the order Pinnipedia are nearly exclusively marine Pinnipeds include: Seals Sea lions and fur seals Walruses. Seals, Sea Lions, and Walrus.

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872 views • 8 slides

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Rear flippers - PowerPoint PPT Presentation

Chapter 9: Marine Reptiles, Birds, and Mammals

Marine Mammals

Marine Mammals

Seals, Sea Lions, and Walrus