Armored worm reveals the ancestry of three major animal groups: A well-preserved fossilized worm dating from 518 million years ago resembles the ancestor of three major groups of living animals

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Armored worm reveals the ancestry of three major animal groups

An international team of scientists, including from the Universities of Bristol and Oxford, and the Natural History Museum, have discovered that a well-preserved, fossilized worm dating from 518 million years ago resembles the ancestor of three major groups of living animals.