Between brackets is the number of accepted species
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2 Shows the number of accepted species within the taxon
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- Biota
- Kingdom Animalia
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Subkingdom Hacrobia
- Subkingdom Harosa
- Infrakingdom Halvaria
- Superphylum Alveolata
- Superphylum Heterokonta
- Phylum Bacillariophyta
- Phylum Bigyra
- Phylum Chrysophyta accepted as Ochrophyta
- Phylum Diatomaceae accepted as Bacillariophyta
- Phylum Eustigmatophyta accepted as Ochrophyta
- Phylum Heterokontophyta accepted as Ochrophyta
- Phylum Hyphochytriomycota accepted as Pseudofungi
- Phylum Labyrinthista accepted as Bigyra
- Phylum Ochrophyta
- Class Aurearenophyceae accepted as Phaeothamniophyceae
- Class Aurophyceae accepted as Phaeothamniophyceae
- Class Bolidophyceae
- Class Chrysomeridophyceae
- Class Chrysoparadoxophyceae
- Class Chrysophyceae
- Order Apoikiales
- Order Apoikiida accepted as Apoikiales
- Order Chromalinales accepted as Chromulinales
- Order Chromulinales
- Family Chromulinaceae Engler
- Genus Acanthochrysis W. Conrad, 1931 accepted as Chromulina L. Cienkowsky, 1870
- Genus Amphychrysis accepted as Amphichrysis Korshikov, 1929
- Genus Anthophysa Doflein, 1909 accepted as Anthophysa Bory de Saint-Vincent, 1822
- Genus Anthophysis J.B.G. Bory de St.-Vincent, 1822 accepted as Anthophysa Bory de Saint-Vincent, 1822
- Genus Chromulina L. Cienkowsky, 1870
- Genus Chromulinella Lemmermann, 1908
- Genus Chromulinospumella J. Boenigk & L. Grossmann in Grossmann et al., 2016
- Genus Cyclonexis A.C. Stokes, 1886
- Genus Didymochrysis Pascher, 1929
- Species Didymochrysis paradoxa Pascher, 1929
- Genus Euchromulina Lemmermann, 1908
- Genus Eucomonas Moroff, 1903 accepted as Oikomonas Kent, 1880
- Genus Eusphaerella Skuja, 1948
- Genus Hymenonema A.C. Stokes, 1888
- Genus Lepidochrysis J. Ikävalko, J. Kristiansen & H.A. Thomsen, 1994
- Genus Monas O.F. Müller, 1773
- Genus Monochrysis Skuja, 1948
- Genus Ochromonas Vysotskii [Wissotsky], 1887
- Genus Oicomonas Doflein, 1928 accepted as Oikomonas Kent, 1880
- Genus Promallomonas Steinecke, 1922
- Genus Protochrysidis B.V. Skvortzov, 1969
- Genus Sphaleromantis Pascher, 1910
- Genus Spumella Cienkowsky, 1870
- Genus Zoogloea F. Cohn, 1854
- Family Chromulinales incertae sedis
- Family Chrysamoebaceae Bourrelly, 1957
- Family Chrysamoebidaceae accepted as Chrysamoebaceae Bourrelly, 1957
- Family Chrysocapsaceae
- Family Chrysolepidomonadaceae M.C. Peters & R.A. Andersen, 1993
- Family Chrysothallaceae
- Family Kybotiaceae accepted as Stylococcaceae
- Family Myxochrysidaceae Pascher, 1931
- Family Naegeliellaceae accepted as Chrysocapsaceae
- Family Phaeoplacaceae accepted as Chrysothallaceae
- Family Stylococcaceae
- Order Chrysamoebidales accepted as Chromulinales
- Order Chrysocapsales accepted as Chromulinales
- Order Chrysophyceae (awaiting allocation)
- Order Chrysosphaerales
- Order Hibberdiales
- Order Hydrurales
- Order Ochromonadales
- Order Paraphysomonadales
- Order Paraphysomonadida accepted as Paraphysomonadales
- Order Rhizochrysidales
- Order Segregatales accepted as Segregatospumellales
- Order Segregatospumellales
- Order Synurales
- Order Thallochrysidales
- Family Archaeomonadaceae Deflandre, 1932
- Family Aurosphaeraceae Schiller, 1925
- Family Chrysosaccaceae
- Genus Amimonas R.K. Peck, 2010
- Genus Bolboforma Daniels & Spiegler, 1974 †
- Genus Bullasphaera G.R. Licari, 1978 †
- Genus Chlorophaeoclonium S. Péterfi, 1948
- Genus Chrysoderma C. Billard, 1984
- Genus Felimonas R.K. Peck, 2010
- Genus Myxochrysis Pascher, 1916
- Genus Peltomonas Vlk, 1941
- Genus Randersenia K.H. Nicholls, 2013
- Genus Sariopsis R.K. Peck, 2010
- Class Dictyochophyceae
- Class Eustigmatophyceae
- Class Hyphochytriomycetes accepted as Hyphochytrea
- Class Olisthodiscophyceae
- Class Pelagophyceae
- Class Phaeophyceae
- Class Phaeosacciophyceae
- Class Phaeothamniophyceae
- Class Picophagea accepted as Picophagophyceae
- Class Picophagophyceae
- Class Pinguiophyceae
- Class Raphidophyceae
- Class Schizocladiophyceae
- Class Synchromophyceae
- Class Synurophyceae accepted as Chrysophyceae
- Class Tribophyceae accepted as Xanthophyceae
- Class Xanthophyceae
- Family Ochrophyta incertae sedis
- Phylum Oomycota accepted as Pseudofungi
- Phylum Phaeophyta accepted as Ochrophyta
- Phylum Pseudofungi
- Phylum Raphidophyta accepted as Ochrophyta
- Phylum Sagenista accepted as Bigyra
- Phylum Xanthophyta accepted as Ochrophyta
- Subphylum Bigyromonada
- Class Bigyromonadea accepted as Developea
- Family Kaonashiidae Weston, Eglit & Simpson, 2023
- Infrakingdom Rhizaria
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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