A 500-million-year-old clawed beast rewrites the origins of spiders and crabs.
image: Holotype specimen (part and companion) showing Megachelicerax cousteaui’s remarkable pincer-like chelicerae. vision Again Credit: Credit: Rudy Lerosey-Aubril It had been a long day teaching Rudy Lerosey-Aubril. As a reward, he returned to clean the Cambrian arthropod fossils he had just discovered for analysis. At first, the model showed all the expected characteristics of its … Read more