Subclass Rhodymeniophycidae (red algae)
Florideophyceae - Rhodymeniophycidae - Rhodymeniophycidae
Parent taxon: Florideophyceae according to E. C. Yang et al. 2016
See also Schneider and Wynne 2007
Sister taxa: Ahnfeltiophycidae, Corallinophycidae, Corallinophycidea, Cryptonemiales, Dawsoniolithon, Hildenbrandiophycidae, Nemaliophycidae, Prismostylus
Subtaxa: Acrosymphytales Bonnemaisoniales Ceramiales Gelidiales Gigartinales Gracilariales Halymeniales Nemastomatales Peyssonneliales Plocamiales Rhodymeniales Sebdeniales