Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
   Diaphoretickes Adl et al., 2012 see Superkingdom Corticata Lankester, 1878
     [crown] Clade Sar Adl et al. 2012 see Subkingdom Harosa Cavalier-Smith, 2010
       Stramenopiles Patterson, 1990 - stramenopiles see Superphylum Heterokonta Caval.-Sm. (1986)
         Diatomea Kütz. (1844)
           Coscinodiscophytina Medlin & Kaczmarska (2004) [paraphyletic] see Subphylum Khakista Caval.-Sm. (2000)
             Rhizosolenids D.G.Mann, in S.M. Adl et al. (2005)
               Genus Guinardia H. Perag. (1892)