[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 Dumontiaceae Bory (1828)
             1 Genus Dilsea Stackhouse (1809)
             2 Genus Dudresnaya P.L. Crouan & H.M. Crouan (1835), nom. cons.
             3 Genus Dumontia J.V.F. Lamouroux (1813)
             4 Genus Pikea Harvey (1853)