Everyone has a past. That includes the millions of species of insects, arachnids, and nematode worms that make up a major animal group called the Ecdysozoa.

University of Rochester researchers studied Earth’s magnetic field during the transformative Ediacaran Period, which spanned from about 635 to 541 million years ago. The research raises ...

"We know they didn't just appear out of nowhere, and so the ancestors of all ecdysozoans must have been present during the preceding Ediacaran period." DNA-based analyses, used to predict the age ...

"We know they didn't just appear out of nowhere, and so the ancestors of all ecdysozoans must have been present during the preceding Ediacaran period." DNA-based analyses, used to predict the age ...