Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
   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
         Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
           Porifera Grant, 1836 - sponges see Phylum Porifera Grant, 1836
             Calcispongia Johnston, 1842 see Class Calcarea Bowerbank, 1864
               1 Calcinea Bidder, 1898 see Subclass Calcinea Bidder, 1898
               2 Calcaronea Bidder, 1898 see Subclass Calcaronea Bidder, 1898