Ax, P. (1951). Der Turbellarien des Eulitorals der Kieler Bucht. <em>Zoologisher Jahrbucherabteilung fur Systematik, Geographie und Biologie de Tierre.</em> 80: 277-378.[details] Available for editors
Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2025). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Otoplana subterranea Ax, 1951. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=154870 on 2026-07-19
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Otoplana subterranea Ax, 1951. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=154870 on 2026-07-19
original descriptionAx, P. (1951). Der Turbellarien des Eulitorals der Kieler Bucht. <em>Zoologisher Jahrbucherabteilung fur Systematik, Geographie und Biologie de Tierre.</em> 80: 277-378.[details] Available for editors
Present Inaccurate Introduced: alien Containing type locality