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 ...

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.

It’s not difficult to imagine that modern sharks have dinosaur-cousins, especially not with their terrifying teeth and intimidating physique. Recently, a groundbreaking shark fossil was discovered, ...

(MENAFN- The Conversation) 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 ...

Credit: Kristen Grace/FLMNH, CC BY-SA. 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 ...

Paleontologists have unearthed the nearly complete fossil of a colossal shark that prowled the ancient seas some nine million years ago. The fossilized remains belong to Cosmopolitodus hastalis ...