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Prehistoric Shark Gallery Tour the Ancient Seas Make Your Own Shark
The American Museum of Natural History
The Search for Ancient Sharks
One of the best known early sharks, 3-foot-longCladoselachehunted in the warm seas of North America 375 million years ago. It had a markedly weaker jaw joint than present-day sharks, but it compensated with impressive jaw-closing muscles that are frequently fossilized.Caldoselachehad a deep, forked tail and was probably a fast swimmer, which is just as well since it may have been preyed upon by the giant 15-foot armored fish known asDunkleosteus.


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Picture: D.W. Miller |
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