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Discovery in a cave of a tiny shark with "nails" for teeth 🦷
In the depths of the world's longest cave, researchers have uncovered the fossilized remains of a 340-million-year-old shark.
‘Chipmunk shark’ lurked 340 million years ago. Its teeth were just found in Kentucky
A shark no larger than a human hand that stalked the ancient sea floor 340 million years ago has been dubbed the “chipmunk ...