[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Count: 13c;41o;74f;125g;446s;53v
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
  Count: 12c;39o;71f;118g;441s;53v
     Class Bacillariophyceae Haeckel (1878) - pennates
    Count: 8o;13f;20g;55s
       Subclass Bacillariophycidae D.G.Mann (1990) - raphid diatoms
      Count: 8o;13f;20g;55s
         Order Naviculales Bessey (1907)
        Count: 2f;3g;19s
           Suborder Neidiineae D.G.Mann (1990)
          Count: 2f;3g;19s
             Family Pleurosigmataceae Mereschk. (1903)
            Count: 2g;13s
               Genus Pleurosigma W.Sm. (1852)
              Count: 7s
                 1 Pleurosigma angulatum (E.J. Quekett) W.Sm. (1852)
                Count: -
                 2 Pleurosigma delicatulum W.Sm.
                Count: -
                 3 Pleurosigma elongatum W.Sm.
                Count: -
                 4 Pleurosigma formosum W.Sm.
                Count: -
                 5 Pleurosigma macrum W.Sm.
                Count: -
                 6 Pleurosigma normani Ralfs, in Pritchard see Pleurosigma normanii Ralfs, in Pritchard (1861)
                Count: -
                 7 Pleurosigma rigidum W.Sm.
                Count: -