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 ...

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 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 ...