Reference

Wilhelm Foissner (1995): The Infraciliature of Cryptopharynx setigerus Kahl, 1928 and Apocryptopharynx hippocampoides nov. gen., nov. spec. (Ciliophora, Karyorelictea), with an Account on Evolution in Loxodid Ciliates – Archiv für Protistenkunde – 146_1995: 309 - 327.