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Transitional Fossils / Evolution

Transitional Fossils Presentation for Educators

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Transitional Fossils / Evolution

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Presentation Transcript

  1. Transitional changes

  2. Fish to Amphibian

  3. Osteolepis 400 million years ago Ancestor to lungfish and tetrapods

  4. Tiktaalik: a tetrapod 370 million years ago Fishlike amphibian

  5. Gerobatrachus hottoni: Ancestor to frogs and salamanders 290 million years ago

  6. Triadobatrachus An early frog ancestor that did not hop 250 million years ago

  7. Amphibian to Reptile

  8. Westlothiana 335 million years ago Amphibian-like reptile

  9. Hylonomus 312 million years ago ancestor to reptiles

  10. Eupodophis 92 million years ago Ancestor to snakes Had legs

  11. Odontochelys 220 million years ago Ancestor to turtles Had half a shell

  12. Reptile to Dinosaur

  13. Protorosaurus 300 million years ago Reptile with dinosaur features

  14. Asilisaurus 245 million years ago

  15. Eoraptor 231 million years ago A dinosaur

  16. Dinosaur to Bird

  17. Juravenator 152 million years ago Ancestor to Birds light feather covering

  18. Archaeoptryx 145 million years ago Ancestor to birds Covered with feathers Could glide, but not fly

  19. Eoalulavis 125 million years ago Ancestor to birds Could fly

  20. Reptile to Mammal

  21. Lycaenops 270 million years ago Ancestor to mammals

  22. Cynognathus 260 million years ago Ancestor to mammals

  23. Thrinaxodon 248 million years ago Ancestor to mammals

  24. Diarthrognathus 200 million years ago Ancestor to mammals

  25. Yanoconodon 100 million years ago

  26. Assorted Mammal Ancestors

  27. Hesperocyon: ancestor to modern canines: Wolves, foxes, coyotes, jackels, dogs 40 million years ago

  28. Pakicetus 55 million years ago Ancestor to whales

  29. Ambulocetus 50 million years ago Ancestor to whales

  30. Kutchicetus 45 million years ago Ancestor to whales

  31. Dorudon 40 million years ago Ancestor to whales

  32. Eurhinodelphis 15 million years ago Ancestor to dolphins

  33. Moeritherium 37 million years ago Ancestor to elephants

  34. Deinotherium 20 million years ago Ancestor to elephants

  35. Platybelodon Extinct cousin to elephants 15 million years ago

  36. Wooly Mammoth Another extinct cousin to elephants 5 million years ago

  37. Paramylodon harlani 5 million years ago Ancestor to sloths

  38. Phenacodus 55 million years ago Ancestor to horses, cows, deer

  39. Mesohippus barbouri 30 million years ago Ancestor to horses Had toes

  40. Glyptodon 23 million years ago Ancestor of armadillos

  41. Darwinius masillae 47 million years ago Mammal with primate features Ancestor to monkeys

  42. Proconsul 27 million years ago Monkey-like ape Ancestor to apes

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