Dossier
500-million-year-old fossil
Coverage of 500-million-year-old fossil in the Nexus archive.
- This tiny claw in a 500-million-year-old fossil just rewrote the origin of spiders
Researchers found a tiny claw in a 500-million-year-old fossil that identified Megachelicerax cousteaui as the oldest known spider relative, pushing back the origin of spiders by 20 million years.