Reference

Jo G Van As, Linda 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 Protozool. – 35: 61 - 67.