Ancient fossil sheds big light on evolution enigma, solving a 100-year arthropod mystery

PHYSorg
Apr 8, 2025, 3:54 pm200 ptsTop
For over a century, the Cambrian arthropod Helmetia expansa remained a mystery. Discovered by paleontologist Charles Doolittle Walcott in 1918, it was initially classified as a crustacean. Despite frequent mentions in research papers, this species has never been formally described, and only one specimen has…

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Ancient fossil sheds big light on evolution enigma, solving a 100-year arthropod mystery

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