Van As & Basson 1996. An endosymbiotic trichodinid, Trichodina rhinobatae sp. n. (Ciliophora: Peritrichia) found in the lesser guitarfish, Rhinobatos annulatus Smith, 1841 (Rajiformes: Rhinobatidae) from the South African coast. Acta Protozoologica, 35(1), February 1996: 61-67