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
The last expanded taxon is highlighted
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- Biota (1 799)
- Kingdom Chromista (437)
- Subkingdom Hacrobia
- Subkingdom Harosa (437)
- Infrakingdom Heterokonta (437)
- Phylum Ochrophyta (437)
- Subphylum Ochrophyta incertae sedis
- Subphylum Phaeista
- Class Phaeophyceae (436)
- Subclass Dictyotophycidae (74)
- Order Dictyotales (45)
- Order Onslowiales (1)
- Order Sphacelariales (27)
- Order Syringodermatales (1)
- Family Syringodermataceae E.C. Henry, 1984 (1)
- Subclass Discosporangiophycidae (2)
- Subclass Fucophycidae (352)
- Subclass Ishigeophycidae (2)
- Order Cutleriales
- Order Phaeophyceae incertae sedis (5)
- Order Stschapoviales (1)
- Class Phaeothamniophyceae
- Class Xanthophyceae (1)
- Kingdom Plantae (1 362)