Learn how a fossil from approximately 500 million years ago traces the evolutionary origins of spiders, scorpions, and other ...

In a fascinating study published in Current Biology, researchers have turned our understanding of arachnid evolution on its ...

Researchers have wondered how an alligator-size arthropod lived more than 300 million years ago. The discovery of an intact Arthropleura head offers new insights.

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

Researchers have wondered how an alligator-size arthropod lived more than 300 million years ago. The discovery of an intact Arthropleura head offers new insights.

No living arthropod is larger than the new sea monster, and only a few extinct arthropods – among them an amimal like a giant sea scorpion -- could claim to be bigger.

A creature that scuttled along the seafloor 450 million years ago has been preserved in a rare and striking fossil that formed in fool’s gold.

There are few wild animals whose existence you could describe as ‘fun’, but a case could definitely be made for the ...

This is definitely one creature you wouldn’t want to run into in a dark alley, at least if you were around 500 million years ago. Utaurora comosa appears to have spawned on another planet. It ...

Researchers have wondered how an alligator-size arthropod lived more than 300 million years ago. The discovery of an intact Arthropleura head offers new insights.