| Euneoophora Proseriata Meixner, 1938 | | w | other taxonomic work | |
| Lithophora Otoplanidae Hallez, 1892 | | w | other taxonomic work | |
| Otoplanidae Otoplaninae Hallez, 1910 | | w | latest taxonomic authority | |
| Kataplana germanica (Meixner in Ax, 1951) | [with synonyms] | w | latest taxonomic authority | 754 |
| Lithophora Otomesostomidae Midelburg, 1908 | [with synonyms] | w | other taxonomic work | 656 |
| Otoplanidae Archotoplaninae Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Archotoplaninae Archotoplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Archotoplana holotricha Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Otoplanidae Bulbotoplaninae Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Bulbotoplaninae Bulbotoplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Bulbotoplana acephala Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Otoplaninae Dicoelandropora Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Dicoelandropora atriopapillata Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Otoplaninae Itaspiella Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Otoplaninae Monostichoplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Monostichoplana tenuissima Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Otoplaninae Notocaryoplanella Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Orthoplana mediterranea Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Otoplaninae Otoplanella Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Otoplaninae Paradoxoplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Paradoxoplana solida Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Otoplanidae Parotoplaninae Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplaninae Kataplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Kataplana mesopharynx Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplana multispinosa Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplana papii Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplana primitiva Ax, 1956 | | w | primary taxonomic authority (describer) | 720-722 |
| Parotoplana procerostyla Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplana renatae Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplaninae Parotoplanella Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplanella progermaria Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplaninae Parotoplanina Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplanina geminoducta Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplaninae Paraplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Paraplana biscayensis Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplaninae Postbursoplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Postbursoplana fibulata Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Postbursoplana minima Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplaninae Praebursoplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Praebursoplana reisingeri Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Praebursoplana steinboecki Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Praebursoplana subsalina Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Parotoplaninae Triporoplana Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Triporoplana synsiphonioides Ax, 1956 | | w | primary taxonomic authority (describer) | |
| Philosyrtis fennica Ax, 1954 | | w | other taxonomic work | 768 |
| Pseudosyrtis subterranea (Ax, 1951) | [with synonyms] | w | other taxonomic work | 769-772, figs. 274-280 |
| Opistomum immigrans Ax, 1956 | | w | other taxonomic work | |