| Protoplanellinae Prorhynchella Ruebush, 1939 | w | latest taxonomic authority | ||
| Prorhynchella minuta Ruebush, 1939 | w | latest taxonomic authority | ||
| Thalassotyphloplanida Kytorhynchidae Rieger, 1974 | w | primary taxonomic authority (describer) | 53-54 | |
| Kytorhynchidae Kytorhynchella Rieger, 1974 | w | primary taxonomic authority (describer) | 54 | |
| Kytorhynchella karlingi Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchella meixneri Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchella riedli Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchidae Kytorhynchus Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchus (Eukytorhynchus) microstylus Rieger, 1974 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Kytorhynchus Kytorhynchus Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchus (Kytorhynchus) oculatus Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchus (Kytorhynchus) sp.I Rieger, 1974 | - | primary taxonomic authority (describer) | ||
| Kytorhynchus (Kytorhynchus) sp.II Rieger, 1974 | - | primary taxonomic authority (describer) | ||
| Kytorhynchus Kytorhynchoides Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchus (Kytorhynchoides) macrostylus Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchus (Kytorhynchoides) microstylus Rieger, 1974 | w | primary taxonomic authority (describer) | ||
| Kytorhynchus (Eukytorhynchus) macrostylus Rieger, 1974 | [with synonyms] | w | primary taxonomic authority (describer) | 12 |