Ancient fossil sheds big light on evolution enigma, solving a 100-year arthropod mystery - Phys.org
Harvard University |
Technology |
Phys.Org |
04-10-2025 |
16
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 fr…
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