[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 Cymbellales D.G.Mann (1990)
           Suborder Phaeodactylineae J.C. Lewin (1958)
             Family Phaeodactylaceae J.C. Lewin (1958)
               1 Genus Phaeodactylum Bohlin (1897)