Subkingdom Protozoa Goldfuss 1818
Parent taxon: Eukaryota according to M. A. Ruggiero et al. 2015
See also Blackwell 2004 and Cervato 2005
Sister taxa: Acritarcha, Allonema, Archaeplastida, Chlorobiota, Chromalveolata, Chromista, Dinophyta, Euglenophyta, Opisthokonta, Plantae, Protista, Prymnesiophyta, Rhizaria, Rhizopodea, Stramenopila
Subtaxa: Biciliata Entamoebidae Eozoa Sarcomastigophora Sarcomastigota