This tiny claw in a 500-million-year-old fossil just rewrote the origin of spiders

After a long day of teaching, Rudy Lerosey-Aubril turned to a familiar task: preparing a Cambrian arthropod fossil for study. At first glance, the specimen looked typical for its age. But as he carefully removed surrounding material, something unusual appeared. Instead of an antenna, there was a claw.

1. Homepage
2. Science
3. This tiny claw in a 500-million-year-old fossil just rewrote the origin of spiders