Harvard scientists resolve a mystery of 100 years of arthropods of 508 million years

Helmetia Expansa turned out to have walking legs and moulting behavior, modifying the hypotheses on its mobility and growth. For more than a century, the Camblarian Arthropod Helmetia Expansa remained a mystery. Discovered in 1918 by paleontologist Charles Dolittle Walcott, he was initially identified as crustacean. Although frequently mentioned in the scientific literature, the species had […]