Toothy clues: This extinct species (Carcharocles megalodon) left us a fossil record that consists mostly of isolated teeth – some of which are up to 7 inches long.

When Did Carcharocles megalodon Become Extinct? A New Analysis of the Fossil Record Object Details Author Pimiento, Catalina Clements, Christopher F. Citation Pimiento, Catalina and Clements, ...

She had found the tooth of a megalodon, an extinct species of giant mackerel shark that died off millions of years ago. “You get a little dirty sometimes, but that's okay!” she said.