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@Lecture09_9 - e.g Tasmanian Wolf PALEOBIOLOGY Extinct as...

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1 1 Fall 2009, GEL 107: Lecture 09 PALEOBIOLOGY 2 Extinction 3 4 5 Steller’s Sea Cow 8 m long 10,000 kg (22.046 lbs) Extinct as of 1768 (reportedly) 6 Extinct as of 1911 7 e.g., Tasmanian Wolf Extinct as of 1936 8 Not seen for 50 years 9 What are immigration and origination? How do we identify extinctions in the fossil record? Is mass extinction different from background extinction? What are background and mass extinctions? What may be mistaken as true extinction? Questions
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2 10 Fig. 7.19b Stephen Marshak old young 11 old young 12 old young 13 What are immigration and origination? How do we identify extinctions in the fossil record? Is mass extinction different from background extinction? What are background and mass extinctions? What may be mistaken as true extinction? Questions 14 old young 15 old young 16 Extinction Local Extinction X 17 18 True Extinction (global extinction) X X X X X X X
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3 19 old young 20 Emmigration Extinction X 21 What are immigration and origination?
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