Ever wonder why sharks have so many differently shaped teeth or why they keep regrowing throughout their lives? Dr. David ...

The shark’s distinctive teeth were identified as a new-to-science species during a Paleontological Resource Inventory at Mammoth Cave National Park in southern Kentucky this year. The inventory ...

This “chipmunk shark” packed quite a punch with its strange set of teeth. Its diet varied from shrimp to worms to hard-shelled brachiopods — generally crunchy things. The discovery ...

Mammoth Cave houses over 70 different species of ancient fish fossils, including Clavusodens mcginnisi identified from small fossilized teeth. The newly identified shark had an estimated length of ...