There are over a dozen shark species that swim off the coast of Massachusetts, from the small spiny dogfish to massive whale sharks. Sharks even hang out in Boston Harbor. Here's a look at the ...

U.S. researchers discovered a new shark species in rock layers at Mammoth Cave National Park in Kentucky, the National Park Service reported.. On October 11, which is National Fossil Day ...

A study was finally conducted in 2019 after a cave guide named Kelli Tolleson submitted photos of the teeth to J.P. Hodnett, who is a renowned shark research specialist.

The new species is part of the petalodont, which means petal-toothed shark family. The new species was discovered when several small spoon-like teeth were found in a cave wall and ceiling during ...