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Part 5 – Living on Land

Part 5 – Living on Land. From fish to (terrestrial) tetrapod. “fishes”. tetrapods. The Transition. Challenges of terrestrial living. Tetrapods. “Fishes”. The players …. Aquatic tetrapods. † Shallow water, freshwater aquatic tetrapod (lobe-finned fish) . Aquatic tetrapods.

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Part 5 – Living on Land

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  1. Part 5 – Living on Land From fish to (terrestrial) tetrapod

  2. “fishes” tetrapods The Transition

  3. Challenges of terrestrial living

  4. Tetrapods “Fishes”

  5. The players …..

  6. Aquatic tetrapods

  7. † Shallow water, freshwater aquatic tetrapod (lobe-finned fish)

  8. Aquatic tetrapods

  9. Icthyostega Internal choanae

  10. Internal choanae

  11. Aquatic / terrestrial tetrapods

  12. † Primitive aquatic tetrapods

  13. † Primitive terrestrial tetrapods(on the way to amphibians)

  14. Terrestrial tetrapods

  15. 2 terrestrial tetrapod groups

  16. 1. Amniotes(reptile/bird, mammal) (Lepospondyli)

  17. 1. † Primitive amniotes (pre- reptile/bird, mammal) (Lepospondyli– husk vertebrae)

  18. 2. Temnospondyli Amphibians + (many) extinct things

  19. 2. Temnospondyli † Proto-Amphibians (split vertebrae)

  20. 2 terrestrial tetrapod groups

  21. Amphibians Amniotes † aquatic tetrapods † Temnospondyli † semi-terrestrial tetrapods † Lepospondyli Terrestrial tetrapods Tetrapods

  22. lobe-fin fish Amnoita Class Amphibia † various dead ends † various dead ends Lepospondyli Temnospondyli †various dead ends terrestrial aquatic †early tetrapods tetrapod fish

  23. Some time scale 6 billion years

  24. Cenozoic Mesozoic Paleozoic 600 million years

  25. Fish Events Paleozoic

  26. Tetrapod events (early) Paleozoic

  27. Tetrapod events (late) Paleozoic

  28. Paleozoic Earth

  29. Paleozoic Earth

  30. Ordovician terrestrial habitats

  31. Devonian terrestrial habitats

  32. Carboniferous terrestrial habitats

  33. Carboniferous millipede tracks

  34. Meganeura Carboniferous dragonfly 75 cm wingspan

  35. Permian – cooler and drier

  36. Permian Volcanism

  37. Devonian – First tetrapods Panderichthys Tiktaalik Acanthostega Ichthyostega

  38. Carboniferous –tetrapods diversify and move onto land Pederpes Loxomma Amphibamus Tuditanus

  39. Permian – it all almost ends

  40. Living on land

  41. Pre-adaptations Lungs Limbs

  42. Pre-adaptations Internal choanae

  43. Support and Movement

  44. Vertebral innovations Terrestrial tetrapods Fish primitive (terrestrial) tetrapod

  45. Vertebral Column fishes, pre-terrestrial tetrapods

  46. Vertebral Column terrestrial tetrapods

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