[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 Coscinodiscophyceae Round & R.M. Crawford (1990) - radial centrics
    Count: 12o;21f;32g;136s;9v
       Subclass Biddulphiophycidaea (Round & Crawford, in Round et al., 1990) see Subclass Biddulphiophycidae Round & R.M. Crawford (1990)
      Count: 3o;6f;9g;18s
         Order Biddulphiales Willi Krieg. (1954)
        Count: 1f;1g;4s
           Family Biddulphiaceae Kütz. (1844)
          Count: 1g;4s
             Genus Biddulphia Gray (1821)
            Count: 4s
               Biddulphia tridens (Ehrenberg) Ehrenberg
              Count: -