[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 Coscinodiscophyceae Round & R.M. Crawford (1990) - radial centrics
       Subclass Rhizosoleniophycidae Round & R.M. Crawford (1990)
         Order Rhizosoleniales P.C.Silva (1962)
           Family Rhizosoleniaceae De Toni (1890)
             Genus Pseudosolenia Sundström (1986)
               1 Pseudosolenia calcar-avis (Schultze, 1859) B.G.Sundström (1986)