| Paramesostominae Gandalfia Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1563-1565, Fig 1 |
| Gandalfia bilunata Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1563-1565, Fig 1 |
| Ceratopera axi (Riedl, 1954) | [with synonyms] | w | other taxonomic work | 1565-1566 |
| Trigonostomidae Mahurubia Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1566-1569, Fig 2 |
| Mahurubia clava Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1566-1569, Fig 2 |
| Trigonostomidae Parapharyngiella Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1569-1571, Fig 3 |
| Parapharyngiella involucrum Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1569-1571, Fig 3 |
| Mariplanidae Poseidoplanella Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1571-1575, Fig 4 |
| Poseidoplanella halleti Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1571-1575, Fig 4 |
| Castrada (Castrada) trispina Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1575-1578, Fig 5 |
| Castrada Castrada O Schmidt, 1861 | [with synonyms] | w | latest taxonomic authority | 1578 |
| Thalassotyphloplanida Aegira Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1578-1581, Fig 6 |
| Aegira annabellae Willems, Artois, Vermin, Backeljau, & Schockaert, 2005 | | w | primary taxonomic authority (describer) | 1578-1581, Fig 6 |