A 555-million-year-old worm-like organism, Uncus dzaugisi, has been identified as the oldest confirmed member of Ecdysozoa, a superphylum that encompasses modern insects, crustaceans, and nematodes.

The discovery of Uncus dzaugisi confirms the existence of early Ecdysozoans, supporting the theory that their lineage predates the Cambrian explosion. The team of researchers took extreme care to ...