Cathaemasiidae
{{Short description|Family of flatworms}}
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{{One source|date=December 2023}}
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{{Automatic taxobox
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|taxon = Cathaemasiidae
|authority = Fuhrmann, 1928
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Cathaemasiidae is a family of flatworms belonging to the order Plagiorchiida.{{cite web |title=IRMNG - Cathaemasiidae Fuhrmann, 1928 |url=https://www.irmng.org/aphia.php?p=taxdetails&id=109559 |website=www.irmng.org |access-date=13 May 2021}}
- Cathaemasia Looss, 1899
- Cathaemasioides Teixeira de Freitas, 1941
- Pulchrosoma Travassos, 1916
- Reesella Mettrick, 1956