One of the reasons sharks have been so successful is that they’ve exploited different ecosystems and eaten different types of foods. And because they’re eating different foods, they need different ...

Bull sharks have over 350 teeth, and they aren’t afraid to use them. Learn what sets bull shark teeth apart, including the ...

Prehistoric waters held all kinds of fascinating creatures ... We mostly discover these extinct sharks through their teeth, which they grew in large numbers throughout their lives and which ...

What is known about megalodons comes from their teeth, with more information consistently being discovered about the massive ancient sharks.

Like human teeth, shark chompers contain collagen ... life of sharks The researchers found that, centuries ago, different types of sharks were feeding on animals that occupied the same level ...

Over 500 species of sharks exist in our oceans today, ranging from hammerheads (Sphyrnidae) to tiger sharks (Galeocerdo ...

At different life stages, sand tiger shark teeth change in morphology. The shifting tooth shape might reflect changes in their diet. I am using microtomography (micro-CT) to image the teeth in 3D and ...

to otoliths — inner ear bones — from different kinds of fish, to teeth from marine mammals, plus shark teeth. We could do the same nitrogen isotope analysis and put together the whole story of ...

This “chipmunk shark” packed quite a punch with its strange set of teeth. Its diet varied from ... “We’ve ended up finding at least 70 different kinds of shark at Mammoth Cave from a ...