Fossil teeth of extinct megalodon sharks have grooves made by other megalodon teeth, hinting at violent encounters between ...

Sharks have ruled the Earth’s oceans for 400 million years. Recent research on fossil shark teeth has discovered an ...

This trend of aquatic horror was playfully dubbed S harksploitation and has remained a hallmark of b movies long after even Jaws' own sequels proved unpopular. Shark films run the gamut from big ...

Remarkably, fossil shark teeth are also incredibly abundant. Sharks ruled the earth's oceans for 400 million years, and every individual grows and sheds thousands of teeth in their lifetime.

MacFadden, University of Florida (THE CONVERSATION) The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved in ancient times ...

Our study was one of the first to date Florida coastal deposits using fossil shark teeth and a technique that looks at variations in ocean strontium. Strontium is a chemical element that occurs ...