Somewhere between 100 and 72 million years ago, while mosasaurs and plesiosaurs dominated the world’s oceans, something else was hunting in the deep: octopuses that may have stretched roughly 19 ...

Locked inside fist-sized lumps of ancient rock from Japan and Vancouver Island, paleontologists found something that almost never survives the fossil record: the jaws of giant octopuses. A team led by ...

Add Yahoo as a preferred source to see more of our stories on Google. (Rui Palma/iStock/Getty Images Plus) Long before Megalodon ruled the seas, something just as unsettling may have lurked in the ...

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 ...

Creatures that strongly resemble legends of the Kraken may have been the kings of Cretaceous seas. A study in Science finds that ancient octopus species, inferred from massive fossil beaks from 72 to ...

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 ...

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 ...

A "kraken-like" giant octopus might have been one of the most formidable predators around 100 million years ago, scientists have found. New research led by scientists from Japan's Hokkaido University, ...