00:00Deep in Kentucky's Mammoth Cave, scientists have uncovered a new ancient shark,
00:05Mckadon's Olsoni, that lived over 340 million years ago.
00:10Smaller than a foot long, this little predator used a unique curved row of teeth
00:15to crush mollusks and worms.
00:18Mammoth Cave wasn't always dry land.
00:21340 million years ago, it lay beneath a warm, shallow, sea-teeming with marine life.
00:29Scientists have now identified more than 70 prehistoric marine species in the cave,
00:34including numerous sharks.
00:37Named after park and paleontology heroes,
00:40Mckadon's Olsoni honors Ricard Olson for his fossil documentation contributions.
00:45Small shark. Huge discovery.
00:48Want more history from deep time? Follow for more.
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