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Because a complete skeleton has never been found, scholars can only study the prehistoric beast by analyzing partial remains and comparing them to other shark species. Its serrated teeth resemble ...

Genevieve Formation, which is estimated to be about 340 million years old. Unlike some of the more mega-sized shark species of ancient Earth, park officials said the recently found shark only measured ...

The massive prehistoric fish has been shocking Northeast anglers, who are normally looking for striped bass, fluke, bluefish and the occasional shark. Scientists and marine biologists are mystified.