[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 Palmariales Guiry & D.E.G.Irvine
           Family Rhodophysemataceae G.W.Saunders & J.L. McLachlan (1990)
             1 Genus Halosacciocolax S. Lund (1959)
             2 Genus Meiodiscus G.W.Saunders & J.L. McLachlan (1991)
             3 Genus Rhodophysema Batters (1900)