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An archaeologist arranges a deep-sea core from off the coast of Britain. These...
Dr. Stephen Cairns
Dr. Stephen Cairns is a research zoologist and chair of the Department of...
Rudist clams are mollusks that went extinct about 65 million years ago. They were...
An American crocodile (Crocodylus acutus) resting on a bed of seagrass. These...