General: Elongate cylindrical cast composed of tightly grouped rings perpendicular to the long axis of the cast. Compare to coiled cast.
ReferencesEncyclopedia of Life
Tree of Life
World Register of Marine Species
National Center for Biotechnology Information
Citation: knotted fecal cast () Deep-Sea Guide (DSG) at http://dsg/mbari.org/dsg/view/concept/knotted%20fecal%20cast. Monterey Bay Aquarium Research Institute (MBARI). Consulted on 2020-08-15.