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Global Diversity Through Time

Why is extinction independent of age then the red

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Unformatted text preview: rigger? What is the kill mechanism? What’s the difference How do we test hypotheses? The end- Permian: trigger mechanism Extreme volcano activity covers Siberia Kill mechanism: Hypothesis: hypercapnia Organisms that can’t tolerate high CO2 should fare the worst Examine extinction selectivity This shows that the species that weren’t dependent on carbonate survived the best There might be complex causes for mass extinction, not just a single kill or trigger mechanism Lee Van Valen Do older species go extinct faster than younger ones?...
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