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520-million-year-old worm fossil solves mystery of how modern insects, spiders and crabs evolved – Phys.org

520-million-year-old worm fossil solves mystery of how modern insects, spiders and crabs evolved  Phys.orgOrgan systems of a Cambrian euarthropod larva  Nature.com‘My jaw just dropped’: 500 million-year-old larva fossil found with brain preserved  Livescience.comA 520 million-year-old perfectly preserved creature is set to reveal secrets of evolution  The Independent520-million-year-old fossil reveals how insects and spiders evolved  The Elkhart Truth