Xu, K.; Dolan, J. (2025). World Ciliophora Database. Ptychocylididae Kofoid & Campbell, 1929. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=196207 on 2025-04-26
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025). European Register of Marine Species. Ptychocylididae Kofoid & Campbell, 1929. Accessed at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=196207 on 2025-04-26