Archotoplana Ax, 1956 (original description)
Archotoplana holotricha Ax, 1956 (original description)
Bulbotoplana Ax, 1956 (original description)
Bulbotoplana acephala Ax, 1956 (original description)
Dicoelandropora Ax, 1956 (original description)
Dicoelandropora atriopapillata Ax, 1956 (original description)
Itaspiella Ax, 1956 (original description)
Kataplana Ax, 1956 (original description)
Kataplana germanica (Meixner in Ax, 1951) (new combination reference)
Kataplana mesopharynx Ax, 1956 (original description)
Monostichoplana Ax, 1956 (original description)
Monostichoplana tenuissima Ax, 1956 (original description)
Orthoplana mediterranea Ax, 1956 (original description)
Otoplana intermedia Du Plessis, 1889 (additional source)
Otoplanella Ax, 1956 (original description)
Otoplanella schultzi (Ax, 1951) Ax, 1956 accepted as Otoplanella schulzi (Ax, 1951) (new combination reference)
Paradoxoplana Ax, 1956 (original description)
Paradoxoplana solida Ax, 1956 (original description)
Paraplana Ax, 1956 (original description)
Paraplana biscayensis Ax, 1956 (original description)
Parotoplana multispinosa Ax, 1956 (original description)
Parotoplana papii Ax, 1956 (original description)
Parotoplana primitiva Ax, 1956 (original description)
Parotoplana procerostyla Ax, 1956 (original description)
Parotoplana renatae Ax, 1956 (original description)
Parotoplanella Ax, 1956 (original description)
Parotoplanella progermaria Ax, 1956 (original description)
Parotoplanina Ax, 1956 (original description)
Parotoplanina geminoducta Ax, 1956 (original description)
Postbursoplana Ax, 1956 (original description)
Postbursoplana fibulata Ax, 1956 (original description)
Postbursoplana minima Ax, 1956 (original description)
Postbursoplana reisingeri Ax, 1956 accepted as Praebursoplana reisingeri Ax, 1956 (original description)
Praebursoplana Ax, 1956 (original description)
Praebursoplana reisingeri Ax, 1956 (original description)
Praebursoplana steinböcki Ax, 1956 (original description)
Praebursoplana subsalina Ax, 1956 (original description)
Pseudosyrtis Ax, 1956 (original description)
Triporoplana Ax, 1956 (original description)
Triporoplana synsiphonioides Ax, 1956 (original description)