Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
   [crown] Amorphea Adl et al. 2012, nom. cl. inval. see Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
     Supergroup Opisthokonta Cavalier-Smith, 1987 - opisthokonts see Clade Opisthokonta Cavalier-Smith 1987, nom. cl. inval.
       Holozoa Lang, O'Kelly, Nerad, Gray & Burger 2002 [Adl et al. 2012] see Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
         Choanomonada Kent, 1880 see Phylum Choanoflagellata Kent, 1880
           Acanthoecida Norris, 1965 see Order Acanthoecida Cavalier-Smith, 1997
             01 Genus Acanthoeca Ellis, 1930
             02 Genus Acanthocorbis Hara & Takahashi, 1984
             03 Genus Amoenoscopa Hara & Takahashi, 1987
             04 Genus Apheloecion Thomsen, 1983
             05 Genus Bicosta Leadbeater, 1978
             06 Genus Calliacantha Leadbeater, 1978
             07 Genus Calotheca Thomsen & Moestrup, 1983
             08 Genus Campanoeca Throndsen, 1974
             09 Genus Campyloacantha Hara & Takahashi, 1987
             10 Genus Conion Thomsen, 1982
             11 Genus Cosmoeca Thomsen, 1984
             12 Genus Crinolina Thomsen, 1976
             13 Genus Crucispina Espeland, 1986
             14 Genus Diaphanoeca Ellis, 1930
             15 Genus Didymoeca Doweld, 2003
             16 Genus Helgoeca Leadbeater, 2008
             17 Genus Kakoeca Buck & Marchant, 1990
             18 Genus Monocosta Thomsen, 1979
             19 Genus Nannoeca H.A. Thomsen, 1988
             20 Genus Parvicorbicula Deflandre, 1960
             21 Genus Platypleura Thomsen, 1983, nom. illeg.
             22 Genus Pleurasiga Schiller, 1925
             23 Genus Polyfibula Manton & Bremer, 1981
             24 Genus Polyoeca Kent, 1880
             25 Genus Saepicula Leadbeater, 1980
             26 Genus Saroeca Thomsen, 1979
             27 Genus Savillea Ellis, 1930
             28 Genus Spinoeca Thomsen, Ostergaard & Hansen, 1995
             29 Genus Spiraloecion Marchant & Perrin, 1986
             30 Genus Stephanacantha Thomsen, 1983
             31 Genus Stephanoeca Ellis, 1930
             32 Genus Syndetophyllum Thomsen & Moestrup, 1983