Foissner 1996. 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 fuer Protistenkunde, 146(3-4), Februar 1996: 309-327