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A 520-million-year-old worm fossil has solved the mystery of how modern insects, spiders and crabs evolved.
The “incredibly rare and detailed” fossil, named Youti yuanshi, offered a peek…
A 520-million-year-old worm fossil has solved the mystery of how modern insects, spiders and crabs evolved.
The “incredibly rare and detailed” fossil, named Youti yuanshi, offered a peek…