Reference

Gregorio D. Fernandez-Leborans [Fernández-Leborans], A. Novillo (1992): Morphology and taxonomy of two new species of marine ciliates (Ciliophora: Spirotrichea: Stichotrichida: Amphisiellidae) – Proc.biol.Soc.Wash. – 105: 165 - 179.