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. How ...

All sharks have teeth, but what may surprise you is that they don’t all have sharp, triangular teeth. ‘Sharks have been around for 420 million years,’ explains Emma Bernard, our Fossil Fish Curator.

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 ...

Fossil teeth show that the asteroid strike at the end of the Cretaceous killed off ... Explore the inky depths in our expert-led, online and on-demand courseDeep Sea, available now. Explore facts ...

The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved in ancient times, according to our newly published work. As paleontologists ...

The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved in ancient times, according to our newly published work. As paleontologists ...