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Octopuses’ earliest relatives that lived 100 million years ago may have been "gigantic" predators that hunted alongside dinosaurs, according to new research. Although scientists previously believed ...

The top predator prowling the seas during the age of the dinosaurs 100 million years ago may have been the octopus. New analyses of fossilized jaws reveal that massive, kraken-like octopuses once ...

A giant octopus, likened to a mythical creature said to be capable of dragging ships to their doom, roamed the seas during the age of the dinosaurs, according to researchers. Fossils of its jaw ...

It was more than it was Kraken-ed up to be. An octopus the size of the Hollywood Sign might seem like a monster from Greek mythology. However, new fossil evidence reveals that massive “kraken”-like ...

More than two decades after scientists identified a fossil as the world’s oldest octopus — officials now say it wasn’t one at all. A recent study published in the journal Proceedings of the Royal ...

Pohlsepia mazonensis, a visually underwhelming fossil from Illinois, fundamentally broke our understanding of cephalopod evolution. Described in 2000 and hailed as the oldest known octopus in the ...

LONDON — A 300-million-year-old tentacled sea creature has lost its crown as the world’s oldest octopus, after scientists found evidence that it’s not an octopus at all. Newly published research ...

In 2000, researchers described an odd fossil found not far from Chicago. It had a round body, finlike structures on one end and a tangle of arms. The fossil was classified as an octopus and named ...

A famous 300-million-year-old fossil that was thought to be the world's oldest octopus—even featuring in the Guinness Book of Records—has turned out to be something else altogether. In what amounts to ...

When octopuses mate, the male keeps the female quite literally at arm’s length. For the act, the male has a special arm called a hectocotylus, which it uses to deposit a sack of sperm inside the ...

Octopus sex hinges on a bizarre anatomical trick. In lieu of a penis, the male has a special mating arm called a hectocotylus. He feels around with it inside the female’s mantle—a bulbous structure ...