Spiders and their arachnid relatives may have actually originated in the sea, according to analysis of an "exquisitely ...

University of Arizona researchers reviewed an "exquisitely preserved" fossil of Mollisonia symmetrica that supports the idea ...

Half a billion years ago, a strange sea-dwelling creature called Mollisonia symmetrica may have paved the way for modern ...

A 500 million-year-old fossil with a spider's brain structure suggests that arachnids may have evolved in the oceans.

A fossilized brain from a 500-million-year-old sea creature shows unexpected spider-like features, hinting that spiders and ...

A new analysis of an exquisitely preserved fossil that lived half a billion years ago suggests that arachnids—spiders and ...

Over 500 million years ago, a small marine creature swam through Cambrian waters. Its name: Mollisonia symmetrica. Long ...

Finely preserved brain features in a tiny marine arthropod fossil suggest that arachnids – spiders and their close kin – may ...

A pseudoscorpion — a clawed arachnid — was discovered in bat poop in Colombia, researchers said. It’s a new species. Photo from Elisa Kerschbaumer, UnSplash A new species was found in feces.

While other arachnids such as spiders and other scorpions can bite or sting to defend themselves, the Vinegaroon is incapable of doing either to a potential predator.

One of the creepiest, crawliest creatures of the Earth may have been swimming before adapting to live on land, new research suggests.

A pseudoscorpion — a clawed arachnid — was discovered in bat poop in Colombia, researchers said. It’s a new species. Photo from Elisa Kerschbaumer, UnSplash A new species was found in feces.