Three tooth marks on the rib indicate the whale was once severely bitten by a strong-jawed animal. Judging by the 6-centimeter (2.4 inch) spacing between tooth marks, scientists believe the attacker ...

Nearly a third of the world's largest ocean species may have died during what researchers are calling the Pliocene marine megafauna extinction, which occurred 2-3 million years ago.

As it turns out, 36 percent of marine megafauna died out at the end of the Pliocene epoch. That’s over a third of the mammals, sharks , turtles, and seabirds that died out as the climate changed .

Some animals have extinct relatives that used to be super-duper huge. ... (18 meters) shark lived during the Miocene and Pliocene epochs, about 23 million to 2.6 million years ago.

What the Pliocene epoch can teach us about future warming on Earth. About 3 million years ago, carbon dioxide levels were similar to today’s. What other changes might we expect?

Using zinc isotopes, researchers investigated the diet of megalodon, the largest shark to have ever lived. The diet of fossil extinct animals can hold clues to their lifestyle, behaviour ...