Subclass Nemaliophycidae (red algae)
Florideophyceae - Nemaliophycidae - Nemaliophycidae
Parent taxon: Florideophyceae according to C. W. Schneider and M. J. Wynne 2007
Sister taxa: Ahnfeltiophycidae, Corallinophycidae, Corallinophycidea, Cryptonemiales, Dawsoniolithon, Hildenbrandiophycidae, Prismostylus, Rhodymeniophycidae
Subtaxa: Acrochaetiales Balbianiales Balliales Batrachospermales Colaconematales Nemaliales Palmariales Rhodogorgonales Thoreales