A) Triassic
B) Permian
C) Jurassic
D) Cretaceous
The largest mass extinction of the Paleozoic Era was:
A) at the end of the Cretaceous
B) at the end of the Permian
C) at the middle of the Jurassic
D) extinctions never happened
Tag Archive | "Cycads"
Cycads First Evolved During The: ?
Posted on 24 June 2013.
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