[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Rhodophycota
       Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901)
         Order Cryptonemiales Schmitz (1892)
           Family Gloiosiphoniaceae
             1 Genus Cruoriopsis Dufour (1864)
             2 Genus Gloiosiphonia Carmichael, in Berkeley (1833)
             3 Genus Plagiospora Kuckuck (1897)
             4 Genus Schimmelmannia Schousboe ex Kuetzing (1849)
             5 Genus Thuretella Schmitz, in Engl. & Prantl (1897)