UC Berkeley
Image Caption
The preservation of many transitional forms, through layers representing a length of time, gives a complete record of slow and steady evolution.
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This image is part of a series:
Pace of evolution (2 of 3) Quick jumps
If evolution happens in "quick" jumps, we'd expect to see big changes happen quickly in the fossil record, with little transition between ancestor and descendent. Here, the descendent preserved in…