Between brackets is the number of accepted marine extant species
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Shows the number of accepted marine extant species within the taxon
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- Biota (1 799)
- Kingdom Chromista (437)
- Kingdom Plantae (1 362)
- Subkingdom Biliphyta (1 064)
- Phylum (Division) Rhodophyta (1 064)
- Subphylum (Subdivision) Eurhodophytina (1 035)
- Class Bangiophyceae (20)
- Class Florideophyceae (1 015)
- Subclass Ahnfeltiophycidae (1)
- Subclass Corallinophycidae (119)
- Subclass Hildenbrandiophycidae (3)
- Subclass Nemaliophycidae (120)
- Subclass Rhodymeniophycidae (772)
- Order Acrosymphytales (4)
- Order Atractophorales (1)
- Order Bonnemaisoniales (9)
- Order Ceramiales (414)
- Order Gelidiales (39)
- Family Gelidiaceae Kützing, 1843 (25)
- Genus Beckerella Kylin, 1956 accepted as Ptilophora Kützing, 1847
- Genus Gelidiophycus G.H.Boo, J.K.Park & S.M.Boo, 2013 (1)
- Genus Gelidium J.V. Lamouroux, 1813 (23)
- Genus Ptilophora Kützing, 1847 (1)
- Family Gelidiellaceae Fan, 1961 (10)
- Family Pterocladiaceae G.P. Felicini & C. Perrone, 2006 (4)
- Order Gigartinales (102)
- Order Gracilariales (17)
- Order Halymeniales (32)
- Order Nemastomatales (16)
- Order Peyssonneliales (64)
- Order Plocamiales (5)
- Order Rhodymeniales (65)
- Order Sebdeniales (4)
- Subphylum (Subdivision) Proteorhodophytina (24)
- Class Rhodophyta incertae sedis (5)
- Subkingdom Viridiplantae (298)