The history of a major animal group, composed of millions of species of insects, arachnids, and nemotodes, has been elusive -- until now. A team has now identified the oldest known ecdysozoan in the ...

A team of researchers has identified the earliest known ecdysozoan fossil, which originated from the Precambrian era.

Scientists have identified Uncus dzaugisi, the oldest ecdysozoan fossil from the Precambrian period, confirming long-held ...