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The American Museum of Natural History
The Search for Ancient Sharks
Protospinax
A shark-like relative of modern rays, the 5-foot-longProtospinaxcruised lagoons in southern Germany about 150 million years ago.

On the sea floor isPseudorhina, an ancient representative of angel sharks.Pseudorhinahas an oddly flattened body well adapted for life on the sea floor, and is seen here capturing an ammonite (an extinct creature related to the modernNautilus).

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Protospinax


 
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Picture: D.W. Miller |
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