[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 Erythropeltidales Garbary, Hansen & Scagel (1980) Family Erythropeltidaceae Skuja (1939) see Family Erythrotrichiaceae G.M. Sm. (1933) Genus Porphyrostromium Trevis. (1848)