Early arthropod specimens don’t have claws like these. Instead, Cambrian arthropods usually have an antenna in that position.

A Utah fossil shows early relatives of spiders and scorpions already had distinctive front claws 500 million years ago.

A new analysis of a specimen found more than 40 years ago reveals the oldest known chelicerate, defined by its pair of pincer ...

Editor’s note: Previous versions of the simulation were incorrectly calculating each team’s odds of reaching the conference finals and beyond. That error has been ...

RIP Microsoft Publisher. Switch to These Alternatives Before It Disappears This Fall Microsoft Publisher is going away for good in a few short months, so you need to find an alternative sooner rather ...