Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Chromista Caval.-Sm. (1981) - chromists
                           Subkingdom Harosa Cavalier-Smith, 2010
                             [crown] Clade Sar Adl et al. 2012 [Simpson & Dunthorn 2020]
                               Infrakingdom Halvaria Cavalier-Smith, 2010
                                 Superphylum Heterokonta Caval.-Sm. (1986)
                                   Phylum Ochrophyta Caval.-Sm. (1995)
                                     Subphylum Khakista Caval.-Sm. (2000)
                                       Diatomea Kütz. (1844)
                                         Class Bacillariophyceae Haeckel (1878) - pennates
                                           Subclass Bacillariophycidaeᵀ D.G.Mann (1990) - raphid diatoms
                                             Order Achnanthales P.C.Silva (1962)
                                               Family Cocconeidaceae Kütz. (1844)
                                                 Genus Cocconeisᵀ Ehrenb. (1838)
                                                   Cocconeis biharensis
                                                   Cocconeis californica Grunow, in Van Heurck (1880)
                                                   Cocconeis costata Gregory (1855)
                                                   Cocconeis disculoides Hustedt (1955)
                                                   Cocconeis disculus (Schumann) Cleve (1882)
                                                   Cocconeis distans Gregory (1855)
                                                   Cocconeis diversa J.R. Carter, in J.R. Carter & Bailey-Watts (1981)
                                                   Cocconeis fluminensis (Grunow) H. Peragallo & M. Peragallo (1897)
                                                   Cocconeis hauniensis A. Witkowski
                                                   Cocconeis hustedtii Krasske (1923)
                                                   Cocconeis lyra A.Schmidt (1874)
                                                   Cocconeis maxima (Grunow) H. Peragallo & M. Peragallo (1897)
                                                   Cocconeis neothumensis Krammer (1991)
                                                   Cocconeis notata Petit (1877)
                                                   Cocconeis pelta A.Schmidt (1874)
                                                   Cocconeis peltoides Hustedt (1939)
                                                   Cocconeis placentula Ehrenberg (1838)
                                                   Cocconeis pseudomarginata Gregory (1857)
                                                   Cocconeis pseudothumensis Reichardt (1982)
                                                   Cocconeis rugosa Sovereign (1958)
                                                   Cocconeis sanctipaulii
                                                   Cocconeis scutellum Ehrenberg
                                                   Cocconeis speciosa Gregory (1855)
                                                   Cocconeis stauroneiformis (W.Sm., 1853) Okuno (1957)
                                                   Cocconeis sublittoralis Hendey (1951)
                                                   Cocconeis thienemannii Hustedt (1954)
                                                   Cocconeis utermoehlii Hustedt (1954)