organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     amoeboid and flagellated protists
       Order Pelobiontida Page, 1976 see Order Rhizomastigida Doflein, 1916
         Family Mastigamoebidae Goldschmidt, 1907
           Genus Phreatamoeba Chávez et al., 1986 see Genus Mastigamoeba Schulze, 1875