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Phylum Chordata

Phylum Chordata. Chondrichthyes. Sharks and rays Cartilaginous fishes Ectothermic Denser than water. Osteichthyes. Bony fishes Ectothermic. Osteichthyes. Swim Bladder provides buoyancy Connected to digestive tract in lungfishes. Amphibia. Amphibia. Metamorphosis “Double Life”

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Phylum Chordata

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  1. Phylum Chordata

  2. Chondrichthyes • Sharksand rays • Cartilaginous fishes • Ectothermic • Denser than water

  3. Osteichthyes • Bony fishes • Ectothermic

  4. Osteichthyes • Swim Bladder provides buoyancy • Connected to digestive tract in lungfishes

  5. Amphibia

  6. Amphibia Metamorphosis “Double Life” Aquatic Larva Terrestrial Adult

  7. Reptilia

  8. Reptilia • Keratinized skin • Waterproof eggs

  9. Crocodiles and Alligators

  10. Aves

  11. Aves • Endothermy • Keratinized feathers • Toothless • Hollow bones

  12. Mammalia • Mammary Glands • Milk for offspring • Keratinized hair • Insulation • Camouflage

  13. Monotremes • One hole • Egg-laying

  14. Marsupials • Development completed in pouch

  15. Placentals • Embryo receives food from maternal blood

  16. Placentals

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