World's longest cave reveals tiny 'Chipmunk Shark' species with iron nail-like teeth
The US National Park Service announced the identification of a new species of ancient shark, Clavusodens mcginnisi, ...
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Discovery in a cave of a tiny shark with "nails" for teeth
Clavusodens mcginnisi measured between 3 and 4 inches (8 to 10 cm), earning it the nickname "chipmunk shark." Its posterior teeth, flat and elongated, resembled rusty nails, while its anterior teeth ...