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II. Animal Diversity 3. Vertebrata c. Jawed Fishes

II. Animal Diversity 3. Vertebrata c. Jawed Fishes. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - gill arches. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - gill arches - evolved to jaws. II. Animal Diversity 3. Vertebrata

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II. Animal Diversity 3. Vertebrata c. Jawed Fishes

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  1. II. Animal Diversity 3. Vertebrata c. Jawed Fishes

  2. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - gill arches

  3. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - gill arches - evolved to jaws

  4. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - gill arches - evolved to jaws - increase feeding

  5. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - gill arches - evolved to jaws - increase feeding - priority on locomotion

  6. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - gill arches - evolved to jaws - increase feeding - priority on locomotion - Cephalization

  7. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - Placoderms (extinct – survived to Permian) dominant predators paired appendages for swimming

  8. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - Placoderms (extinct – survived to Permian) - Cartilaginous fish (Class: Chondrichthyes) also efficient paired fins - sharks - skates, rays - ratfish

  9. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - Placoderms (extinct – survived to Permian) - Cartilaginous fish (Class: Chondrichthyes) - Bony Fish (Class: Osteichthyes)

  10. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - Placoderms (extinct – survived to Permian) - Cartilaginous fish (Class: Chondrichthyes) - Bony Fish (Class: Osteichthyes) - light bone skeleton

  11. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - Placoderms (extinct – survived to Permian) - Cartilaginous fish (Class: Chondrichthyes) - Bony Fish (Class: Osteichthyes) - light bone skeleton - air sac for respiration

  12. II. Animal Diversity 3. Vertebrata c. Jawed Fishes - Placoderms (extinct – survived to Permian) - Cartilaginous fish (Class: Chondrichthyes) - Bony Fish (Class: Osteichthyes) - light bone skeleton - air sac for respiration - in Ray-finned: swim bladder (light, buoyant, fast)

  13. - Bony Fish (Class: Osteichthyes) - light bone skeleton - air sac for respiration - in Ray-finned: swim bladder (light, buoyant, fast) - in Lobe-finned and lungfish: evolved jointed fins… could support weight on land, and breath with air sac. (Devonian – 400my

  14. II. Animal Diversity 3. Vertebrata d. Amphibians

  15. II. Animal Diversity 3. Vertebrata d. Amphibians - Evolved in Devonian (375 mya) - Lungfish - fed on abundant terrestrial Arthropods

  16. Ichthyostegids

  17. II. Animal Diversity 3. Vertebrata d. Amphibians - Caecilians, Frogs and Toads, Salamanders

  18. II. Animal Diversity 3. Vertebrata d. Amphibians - Caecilians, Frogs and Toads, Salamanders - small lungs, respiratory skin must stay moist

  19. II. Animal Diversity 3. Vertebrata d. Amphibians - Caecilians, Frogs and Toads, Salamanders - small lungs, respiratory skin must stay moist - eggs must stay moist

  20. II. Animal Diversity 3. Vertebrata e. Reptiles – evolved in Carboniferous (325 mya)

  21. II. Animal Diversity 3. Vertebrata e. Reptiles - amniotic egg with shell

  22. II. Animal Diversity 3. Vertebrata e. Reptiles - amniotic egg with shell - kidney to produce concentrated urine

  23. II. Animal Diversity 3. Vertebrata e. Reptiles - amniotic egg with shell - kidney to produce concentrated urine - scales to reduce water loss from skin

  24. II. Animal Diversity 3. Vertebrata f. Birds: evolved over 200 mya ago

  25. II. Animal Diversity 3. Vertebrata f. Birds - feathers – homeothermy and flight

  26. II. Animal Diversity 3. Vertebrata f. Birds - feathers – homeothermy and flight - “one way” lung – more efficient

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