Study of fossilised beaks shows patterns of wear and suggests some ancient species were up to 19 metres long ...

Mesozoic seas were full of marine monsters. There were snaggle-toothed fish, shell-crushing sharks, and, of course, enormous mosasaurs. Now, researchers have revealed another dangerous denizen of the ...

The top predator prowling the seas during the age of the dinosaurs 100 million years ago may have been the octopus. New analyses of fossilised jaws reveal that massive, kraken-like octopuses once ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's reconstruction shows the earliest known octopus, which grew to be 19 metres long, based on the size of its fossil beak ...

At the time of the dinosaurs, the oceans were teeming with life. Below the waves, giant marine reptiles, such as the fearsome 4m (13ft) long mosasaurs, were the undisputed apex predators. In artistic ...

The ancient cephalopod, Nanaimoteuthis haggarti, appears to have been an apex predator that rivaled mosasaurs to rule prehistoric seas. A sketch of the giant octopus of the genus Nanaimoteuthis from ...