1. Superfamily Bdellouroidea Diesing, 1862
2. Superfamily Cercyroidea Böhmig, 1906
3. Genus Micropharynx Jägerskiöld, 1896
4. Superfamily Procerodoidea Diesing, 1862

marine, brackish, fresh

Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2026). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Maricola. Accessed through: The UK Marine Environmental Data and Information Network (2026) Marine Species of Britain, Ireland and Adjacent Seas (MSBIAS): a checklist of species derived from the UNICORN and Marine Recorder applications at: https://www.marinespecies.org/msbias/aphia.php?p=taxdetails&id=479188 on 2026-04-03

The UK Marine Environmental Data and Information Network (2026). Marine Species of Britain, Ireland and Adjacent Seas (MSBIAS): a checklist of species derived from the UNICORN and Marine Recorder applications. Maricola. Accessed at: https://marinespecies.org/msbias/aphia.php?p=taxdetails&id=479188 on 2026-04-03

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