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Eras

QuestionAnswer
Created the universe out of an exploding singularity. Big Bang
Began about 500 million years ago. Cambrian
Marks the origin of major animal groups and Hox genes. Cambrian
The most well-known extinction takes place at the end of this period. Cretaceous
Began about 2.8 million years ago and corresponds with the initial colonization of Darwin’s finches. Ice Age
65 million years ago; the well-known mass extinction of the dinosaurs. K-T boundary
The end of this period marks the largest mass extinction in Earth’s history. Permian
When did the Permian period end? 250 million years ago
What formed at the end of the Permian? Pangaea II
Created by: minty_choco
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