After Mass Extinction Events, the Fossil Record Shows

question 153

Multiple Choice

After mass extinction events, the fossil record shows:

• A)new animal phyla evolved after each extinction event.
• B)descendants of survivors of the extinction event gave rise to entirely new lineages of animals.
• C)diversity, in terms of genera, increased to levels above what was present just before the previous extinction.
• D)groups of organisms replace each extinct group with a new, more derived, descendant group.

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