Recent molecular phylogenetic analysis has shown that the marine animals known as peanut worms are not a separate phylum, but are definitely part of the family of annelids, also known as segmented ...

Annelids are found throughout the world’s terrestrial, aquatic and marine habitats. They represent one of three major animal groups with segmentation, so understanding annelid body-plan evolution is ...

Researchers at the Royal Ontario Museum and the University of Toronto have described an exceptionally well-preserved new fossil species of bristle worm called Kootenayscolex barbarensis. Discovered ...