| author | date | title | journal / publication | Ax P | 1961 | Verwandtschaftsbeziehungen und Phylogenie der Turbellarien. | Ergebn. d. Biol., 24: 1-86. Berlin, Göttingen, Heidelberg. |
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| Rhynchoscolex remanei Rixen, 1961 | w | latest taxonomic authority | ||
| Chordarium leucanthum Marcus, 1945 | w | latest taxonomic authority | ||
| Protomonotresis centrophora Reisinger, 1924 | w | latest taxonomic authority | ||
| Prorogonophora perspicua Riedl, 1954 | w | latest taxonomic authority | ||
| Puzostoma evelinae Marcus, 1950 | w | latest taxonomic authority | ||
| Rogneda anglica Karling, 1953 | w | other taxonomic work | ||
| Rogneda polyrhabdota Ax, 1959 | w | other taxonomic work | ||
| Hofstenia atroviridis Bock, 1923 | [with synonyms] | w | other research on this sp. | |
| Hofstenia miamia Correa, 1960 | [with synonyms] | w | other research on this sp. |