The “lost and found” animal was a marine worm called a polychaete, according to the study. However, a few key features set the worm apart from previously described species. The holotype ...

If you have an intestinal worm infection, you may be able to see worms or parts of worms (common with tapeworms in your stool.) Eggs and larvae are harder to see. You may have gastrointestinal (GI) ...