Cephalopods such as octopus and squid evolutionarily diverged from mollusks like slugs and snails. These animals have elaborate compact nervous systems located within specialized arm appendages, which ...
The discovery challenges a 370-million-year-old assumption that only vertebrates could be top ocean predators.
Squid and cuttlefish, though often confused, diverged around 100 million years ago. These "ten-limbed" cephalopods survived ...
The oldest-known sex chromosome emerged in octopus and squid between 455 million and 248 million years ago — 180 million years earlier than the previous record-holder, scientists have discovered. The ...
Just like vertebrates, cephalopods — such as octopuses and squid — have elaborate brains. Neuroscientists are flocking to ...
The ancient cephalopod, Nanaimoteuthis haggarti, appears to have been an apex predator that rivaled mosasaurs to rule prehistoric seas.
Most people have encountered squid through their local seafood menu or field trip to an aquarium. Unlike octopuses, which are named for their eight arms, squid have 10 individual appendages. They most ...
Giant octopuses may have ruled the oceans 100 million years ago, according to fossil evidence.
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