| Trigonostomidae Hyporcus Graff, 1905 | | w | latest taxonomic authority | |
| Trigonostomum brunchorsti Graff, 1905 | | w | other taxonomic work | |
| Trigonostomum intermedium (Attems, 1896) | | w | latest taxonomic authority | |
| Trigonostomum lilliei (Graff, 1911) | [with synonyms] | w | latest taxonomic authority | |
| Trigonostomum marki Graff, 1911 | | w | latest taxonomic authority | |
| Trigonostomidae Woodsholia Graff, 1911 | | w | latest taxonomic authority | |
| Woodsholia lilliei Graff, 1911 | | w | latest taxonomic authority | |
| Platyhelminthes Catenulida Meixner, 1924 | | w | primary taxonomic authority (describer) | |
| Eukalyptorhynchia Koinocystididae Meixner, 1924 | | w | primary taxonomic authority (describer) | |
| Koinocystididae Koinocystis Meixner, 1924 | | w | primary taxonomic authority (describer) | |
| Eukalyptorhynchia Polycystidae Meixner, 1924 | | w | primary taxonomic authority (describer) | |
| Protoplanellinae Haplorhynchella Meixner, 1924 | | w | primary taxonomic authority (describer) | |
| Haplorhynchella paludicola Meixner, 1924 | | w | primary taxonomic authority (describer) | |
| Trigonostomum breitfussi (Graff, 1905) | [with synonyms] | w | latest taxonomic authority | |
| Proxenetes flabellifer Jensen, 1878 | [with synonyms] | w | other taxonomic work | 3, 4-10, 14, 16-17 |
| Promesostoma marmoratum (Schultze, 1851) | [with synonyms] | w | other research on this sp. | 5 |
| Phaenocora foliacea Bohmig, 1914 | [with synonyms] | w | other taxonomic work | 114 |
| Polycystis caledonica (Claparède, 1861) | | w | other taxonomic work | |
| Gyratricella attemsi (Graff, 1913) | [with synonyms] | w | other taxonomic work | |
| Koinocystis neocomensis (Fuhrmann, 1904) | [with synonyms] | w | other taxonomic work | |
| Koinocystis sophiae (Graff, 1905) | | w | other taxonomic work | |
| Polycystis mamertina (Graff, 1874) | | w | other taxonomic work | |
| Polycystis naegelii Kölliker, 1845 | [with synonyms] | w | other taxonomic work | |
