‘Kraken’ fossils show enormous, intelligent octopuses were top predators in Cretaceous seas Fossil jaws from colossal octopuses place them at the top of a prehistoric marine food chain ...

The beak was barely the size of a human fist, but the animal it belonged to may have stretched longer than a humpback whale.

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 ...

Ancient giants found: Two new cirrate octopus species from 100–72 million years ago may have spanned up to 19 meters, making ...

Fossil jaws reveal giant prehistoric octopuses may have ruled ancient oceans as powerful apex predators during the Cretaceous period.

Some octopuses that lived over 72 million years ago were as long as whales. These huge predators may have been the largest invertebrates ever.

Learn how egg size may help explain why ammonites didn’t survive the end-Cretaceous extinction 66 million years ago, while ...