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

ScienceDaily
Apr 3, 2026, 5:11 am118 ptsTrending
What started as routine fossil cleaning turned into a major scientific surprise when researchers uncovered a tiny claw in a 500-million-year-old specimen where no claw should exist. That detail revealed Megachelicerax cousteaui, the oldest known relative of spiders, pushing the origins of this group back by 20…

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