[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
         1 Order Mastogloiales D.G.Mann (1990)
         2 Order Cymbellales D.G.Mann (1990)
         3 Order Naviculineae Hendey (1937)
         4 Order Achnanthales P.C.Silva (1962)
         5 Order Naviculales Bessey (1907)
         6 Order Thalassiophysales D.G.Mann (1990)
         7 Order Bacillariales Hendey (1937)
         8 Order Surirellales D.G.Mann (1990)