[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 Surirellales D.G.Mann (1990)
           Family Surirellaceae Kütz. (1844)
             Genus Stenopterobia Bréb. ex Van Heurck (1896)
               Stenopterobia sigmatella (W. Gregory) R. Ross, in B. Hartley (1986)