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New 340-Million-Year-Old “Chipmunk Shark” Species Discovered In Mammoth Cave National ParkWhat kind of creatures were kicking about in the oceans 340 million years ago? We’ve now got a slightly clearer picture ...
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340-million-year-old 'nail tooth' shark found deep inside Mammoth Cave in KentuckyScientists have found ancient nail tooth shark fossils deep inside Mammoth Cave in Kentucky, revealing new information about ...
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