[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Class Bacillariophyceae Haeckel (1878) - pennates
       Subclass Bacillariophycidae D.G.Mann (1990) - raphid diatoms
         Order Naviculineae Hendey (1937)
           Family Cymbellaceae Grev. (1833)
             Genus Cymbella C.Agardh (1830)
               1 Cymbella turgidula Grunow, in A.Schmidt et al. (1875)