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

The discovery challenges a 370-million-year-old assumption that only vertebrates could be top ocean predators.

Somewhere between 100 and 72 million years ago, while mosasaurs and plesiosaurs dominated the world’s oceans, something else ...

The finned octopus lived alongside T. rex and may have been one of the top predators in the ancient ocean food chain.

A giant octopus, likened to a mythical creature said to be capable of dragging ships to their doom, roamed the seas during ...

Giant octopuses may have ruled the oceans 100 million years ago, according to fossil evidence.

Giant, intelligent octopuses may have once ruled the ancient seas. Modern octopuses are known for their intelligence and ...

Rare fossil finds show colossal octopuses were among the top ocean predators during the Cretaceous Period, according to a new study.

During the Cretaceous, 19-metre-long predatory octopuses swam the seas, and evidence from their fossilised remains suggest ...

A new study suggests that Nanaimoteuthis haggarti could have reached up to 19 metres in length, potentially making them the largest invertebrates ever known.