A new species of bristle worm that lived about 508 million years ago (Cambrian period) has been identified from fossils found in Marble Canyon and Burgess Shale sites, both in British Columbia, Canada. Kootenayscolex barbarensis. Image credit: Danielle Dufault / Royal Ontario Museum. Dubbed Kootenayscolex barbarensis, the ancient worm was a type of annelid, a highly diverse group of animals that includes modern-day leeches and earthworms. “While...
