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
         Ichthyosporea Cavalier-Smith, 1998 see Class Ichthyosporea Cavalier-Smith, 1998
           Ichthyophonae Mendoza, Ajello & Taylor, 2001
             Sphaeroforma arctica J.-P. Jøstensen et al., 2002