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)
- Subkingdom Hacrobia
- Subkingdom Harosa (437)
- Infrakingdom Heterokonta (437)
- Phylum Ochrophyta (437)
- Subphylum Ochrophyta incertae sedis
- Subphylum Phaeista
- Class Phaeophyceae (436)
- Subclass Dictyotophycidae (74)
- Subclass Discosporangiophycidae (2)
- Subclass Fucophycidae (352)
- Subclass Ishigeophycidae (2)
- Order Cutleriales
- Order Phaeophyceae incertae sedis (5)
- Genus Jonssonia S.Lund, 1959 (1)
- Species Jonssonia pulvinata S.Lund, 1959
- Genus Porterinema Waern, 1952 (1)
- Genus Sorapion Kuckuck, 1894 (2)
- Genus Zosterocarpus Bornet, 1890 (1)
- Order Stschapoviales (1)
- Class Phaeothamniophyceae
- Class Xanthophyceae (1)
- Kingdom Plantae (1 362)