Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
Count: -
   Diaphoretickes Adl et al., 2012 see Superkingdom Corticata Lankester, 1878
  Count: -
     Supergroup Sar Adl et al. 2012 see Subkingdom Harosa Cavalier-Smith, 2010
    Count: -
       Stramenopiles Patterson, 1990 - stramenopiles see Superphylum Heterokonta Caval.-Sm. (1986)
      Count: -
         Diatomea Kütz. (1844)
        Count: [*] 2c;22g
           Coscinodiscophytina Medlin & Kaczmarska (2004) [paraphyletic] see Subphylum Khakista Caval.-Sm. (2000)
          Count: [*] 11g
             Melosirids D.G.Mann, in S.M. Adl et al. (2005)
            Count: [*] 3g
               Genus Aulacoseira Thwaites (1848)
              Count: -