A new genetic analysis of a large group of ringed worms called annelids proves a 150-year-old hypothesis that these many species can be split into the lazy bums and the jocks. The annelids, which ...

A new species of leech, Haemopis latero-maculatum (Annelida, Hirudinea, Hirudidae), is described, and its ecology and known distribution are summarized. The new species was discovered in the summer of ...

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 ...

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 ...

A new species of ancient sea worm with an impressively elaborate set of star-shaped chaetae has been discovered after its puzzling fossilized form was found to be animal not mineral. And just as ...