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Let’s Get Primitive!

Let’s Get Primitive!. Mr. Bunn Lunch Lectures Spring 2014. Thalassocnus. Thalassocnus. Extinct Semi-Aquatic (Marine) Sloth Fossils found off the coast of Peru and Chile What is familiar about this marine sloth’s fossil location? (Think back to our last lecture) 2-23 M.Y.A. Thalassocnus.

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Let’s Get Primitive!

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  1. Let’s Get Primitive! Mr. Bunn Lunch Lectures Spring 2014

  2. Thalassocnus

  3. Thalassocnus • Extinct • Semi-Aquatic (Marine) Sloth • Fossils found off the coast of Peru and Chile • What is familiar about this marine sloth’s fossil location? (Think back to our last lecture) • 2-23 M.Y.A.

  4. Thalassocnus • Still mammals • No gills => Lungs • Original habitat: • Coastal waters

  5. Thalassocnus What is it eating?

  6. Thalassocnus • Diet • Sea grasses • Thalassia • Extant genus of sea grass • Why do you think this animal’s genus name is Thalassocnus?

  7. Thalassocnus • Why do you think these sloths fed on sea grasses? • Think about habitat (coastal waters) • Think about diet (sea grasses) • Sea grasses grow in shallow waters

  8. Deinotherium

  9. Deinotherium

  10. Deinotherium • Extinct • Distribution • Asia, Africa and Europe • So…about those tusks? • Claw? • Shovel? • Rake?

  11. Deinotherium

  12. Therizinosaurus • Therizo- • “To reap” or “cut off” • Extinct • Fossils found in Mongolia • Herbivorous?

  13. Therizinosaurus

  14. Epidexipteryx

  15. Epidexipteryx • Extinct • “-teryx” • “feather” • Why do you think it has this name? • “Display feather” • Jurassic Period

  16. Epidexipteryx

  17. Epidexipteryx • Does it look like this animal would be able to fly? • Feathers evolved before flight • Um, what?

  18. Epidexipteryx • Extinct • “-teryx” • “feather” • Why do you think it has this name? • “Display feather” • Jurassic Period

  19. Helicoprion

  20. Helicoprion • Extinct

  21. Helicoprion

  22. Helicoprion • We’ve talked about genera… • Lots of species in a genus

  23. Hallucigenia

  24. Hallucigenia • Cambrian period • Didn’t last very long • Why do you think this is? • Protection from predation? • Under-developed sensory or motor function?

  25. Jaekelopterus

  26. Jaekelopterus

  27. Jaekelopterus • Enough said

  28. Longisquama

  29. Longisquama • Cambrian period • Didn’t last very long • Why do you think this is? • Protection from predation? • Under-developed sensory or motor function?

  30. Longisquama • “Long scales”

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