Permian mass exctinction (Introduction)
by David Turell 
, Wednesday, February 12, 2014, 19:37 (3937 days ago)
Set evolution for the next step. Took only 60,ooo years:-http://www.scientificamerican.com/article/worst-mass-extinction-ever-took-only-60000-years/?&WT.mc_id=SA_DD_20140212
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- Permian mass exctinction -
David Turell,
2014-02-12, 19:37
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David Turell,
2023-02-01, 14:47
- Permian mass extinction; not so wide-spread - David Turell, 2023-02-10, 18:29
- Permian mass exctinction -
David Turell,
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