Add Yahoo as a preferred source to see more of our stories on Google. The surprisingly complex anatomy of the Cambrian chelicerate ‘Megachelicerax cousteaui.’ The fossil was completely unremarkable.

A fresh look at a fossil found more than 40 years ago points to the origins of a widespread group of arthropods called chelicerates. While that name might not sound familiar, its modern-day members ...

(CN) — A newly described fossil from the Cambrian period is reshaping scientists’ understanding of how some of today’s arthropods first evolved. In a recent study published in Nature, researchers from ...

A Cambrian fossil has been identified as the oldest known member of the chelicerates, a group that includes spiders and scorpions. The specimen shows the earliest known example of a chelicera, a ...

Everyone has come across a chelicerate. This diverse group of arthropods contains more than 120,000 known species, including spiders, scorpions, mites and horseshoe crabs. Each of these critters is ...

A 500-million-year-old fossil of a very early relative of spiders, scorpions, and mites offers insights into how this group of arthropods, called chelicerates, evolved. The fossil, found in Utah, USA, ...

In an undated image provided by Rudy Lerosey-Aubril, a fossil arthropod dating back to the Middle Cambrian around 507 million years ago and measuring less than 3.5 inches across. Researchers argue ...

Learn how a fossil from Utah’s Wheeler Formation reveals where early spider relatives lived, how quickly complex animal body plans emerged after the Cambrian Explosion, and why those traits took ...

Named after French explorer Jacques Cousteau, Megachelicerax cousteaui is the oldest of its kind ever found, not to mention ...

Holotype specimen (part and counterpart) showing Megachelicerax cousteaui spectacular pincer-like chelicerae. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases ...

It had been a long day of teaching for Rudy Lerosey-Aubril. As a reward, he returned to cleaning an intriguing Cambrian arthropod fossil he had recently received for review. At first, the specimen ...