Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           "neomura" Cavalier-Smith 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
                 neozoa Cavalier-Smith 1993
                   Superkingdom Corticata Lankester, 1878
                     Kingdom Chromista Caval.-Sm. (1981) - chromists
                       Subkingdom Harosa Cavalier-Smith, 2010
                         Infrakingdom Halvaria Cavalier-Smith, 2010
                           Superphylum Heterokonta Caval.-Sm. (1981)
                             Phylum Ochrophyta Caval.-Sm. (1995)
                               Subphylum Khakista Caval.-Sm. (2000)
                                 Diatomea Kütz. (1844)
                                   [Class] Mediophyceae Medlin & Kaczmarska (2004) [paraphyletic] - bipolar centrics
                                     Order Lithodesmiales Round & R.M. Crawford (1990) [monotypic]
                                       Family Lithodesmiaceaeᵀ Round (1990)
                                         1 Genus Lithodesmiumᵀ Ehrenb. (1840)
                                         2 Genus Lithodesmioides Stosch (1987)
                                         3 Genus Ditylum L.W. Bailey (1861)