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. Our study was one of ...

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 ...

Trapped in the enamel of fossilized dinosaur teeth is a fascinating glimpse into the Earth's atmospheric past stretching back 150 million years. A recent study shows that carbon dioxide levels back ...

If you’ve ever picked up a shark’s tooth on the beach or seen a prehistoric creature’s skull on display at a natural history ...

Researchers investigated the Mesozoic Era's atmosphere and vegetation by studying oxygen isotopes in dinosaur tooth enamel. This is a replica of a Stan™ T. rex tooth. Photograph: Thomas Tütken.

How will the climate crisis affect one of the ocean’s fiercest predators? New research published Wednesday has examined what might happen to sharks’ highly specialized, flesh-cutting teeth. As carbon ...