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

‘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 ...

Some 80 million years ago, the late Cretaceous oceans were patrolled by 17-meter mosasaurs, long-necked plesiosaurs, and massive, predatory sharks. For decades, the paleontological consensus was that ...

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

The ancient cephalopod, Nanaimoteuthis haggarti, appears to have been an apex predator that rivaled mosasaurs to rule prehistoric seas.

The massive invertebrates may have been top predators, according to an analysis of their fossilized jaws. The work suggests ...

A new study brings together intriguing details about the little-known Rhabdodontidae dinosaurs of Late Cretaceous Europe. These gregarious herbivores, characterized by robust builds and beaks ...