[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)
           1 Family Acrosymphytaceae S.C. Lindstrom
           2 Family Corynomorphaceae
           3 Family Dumontiaceae Bory (1828)
           4 Family Gloiosiphoniaceae
           5 Family Halymeniaceae Kützing
           6 Family Kallymeniaceae (J.Agardh) Kylin (1928)
           7 Family Peyssonneliaceae Denizot (1968)
           8 Family Rhizophyllidaceae Schmitz (1889)