| Pseudoposthia macrogonopora Westblad, 1946 | | w | latest taxonomic authority | |
| Acoela Nadinidae Dörjes, 1968 | [with synonyms] | w | latest taxonomic authority | |
| Prosopharyngida Solenofilomorphidae Dörjes, 1968 | | w | latest taxonomic authority | |
| Solenofilomorphidae Oligofilomorpha Dörjes, 1971 | | w | latest taxonomic authority | |
| Oligofilomorpha interstitiophilum Faubel, 1974 | | w | latest taxonomic authority | |
| Oligofilomorpha karlingi Dörjes, 1971 | | w | latest taxonomic authority | |
| Solenofilomorphidae Solenofilomorpha Dörjes, 1968 | | w | latest taxonomic authority | |
| Solenofilomorpha longissima Dörjes, 1968 | | w | latest taxonomic authority | |
| Solenofilomorphidae Endocincta Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Endocincta punctata Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Solenofilomorphidae Fusantrum Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Fusantrum rhammiphorum Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Solenofilomorphidae Myopea Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Myopea crassula Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Myopea latafaucium Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Solenofilomorpha funilis Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Solenofilomorpha guaymensis Crezee, 1975 | | w | primary taxonomic authority (describer) | |
| Oligofilomorpha sp. Crezee, 1975 | | - | primary taxonomic authority (describer) | 819 |
