protoopalina protoopalina protoopalina is a genus of heterokonts. protoopalina protoopalina pingi scientific classification domain: eukaryota clade: diaphoretickes clade: sar clade: stramenopiles phylum: bigyra class: opalinea order: opalinida family: opalinidae genus: protoopalina examples are protoopalina intestinalis and protoopalina pingi. species listed by the australian faunal directory are: protoopalina acuta (raff, 1911) protoopalina adelaidensis metcalf, 1923 protoopalina australis metcalf, 1923 protoopalina bibronii metcalf, 1940 protoopalina dorsalis (raff, 1912) protoopalina hylarum (raff, 1911) protoopalina jonesi delvinquier, 1987 protoopalina papuensis metcalf, 1923 protoopalina polykineta grim & clements, 1996 protoopalina queenslandensis delvinquier, 1987 protoopalina raffae delvinquier, 1987 protoopalina singeri delvinquier, 1987 protoopalina tenuis (raff, 1911) protoopalina tronchini delvinquier, 1987 protoopalina waterloti delvinquier, 1987