Kingdom Protista (Haeckel, 1866) - protists Phylum Sarcomastigophora Honigberg & Balamuth, 1963 Subphylum Mastigophora Diesing, 1866 - flagellates Class Zoomastigophorea - "animal-like" flagellates see Phylum Zoomastigina Order Retortamonadida Grassé, 1952 - retortamonads Genus Chilomastix Alexeieff, 1910