organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     flagellated protists
       residual free-living and predatory heterotrophic flagellates
         cercomonads see Order Cercomonadida Poche, 1913
           1 Genus Cercomonas F. Dujardin, 1841
           2 Genus Heteromita Dujardin, 1841
           3 Genus Massisteria Larsen & Patterson, 1990