A “serrated blade” found sticking from a rock in the United Kingdom has been identified as a “nearly perfect” prehistoric shark tooth, experts say. It belonged to a Squalicorax falcatus shark, which ...
It belonged to a Squalicorax falcatus shark ... of years older than the better known—and monstrously large—megalodon shark. Fossil hunters discovered the tooth "eroding" from a block of ...
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