Golden algae Smith system Ishigeales Proteromonadidae Biddulphiophycidae Coscinodiscophyceae Cepedea Rhizosoleniophycidae Eupodiscaceae Chaetocerotophycidae Botrydiaceae Slopalinida Asterionella Hyphochytriaceae Aplanochytrium Sphacelariales Ascoseira Hydrurales Hibberdiales Proteromonas Florenciellales Axodine Protoopalina Opalina Ralfsiales Pseudofungi Actinophryid Scytothamnales Opalinidae Tilopteridales Bolidophyceae Dictyochophyceae Chattonella Picophagea Raphidophyte Hyphochytrium Chrysosphaerales Discosporangiales Pleurochrysis carterae Chromulinales Fragilariophyceae Phaeothamniales Rhizochromulina Rhizochromulinales Hyphochyt…

triomycetes Syringodermataceae Pinnularia Phaeothamniophycidae Karotomorpha Triparma Cafeteria (bicosoecid) Pelagophycidae Blastocystis Eustigmatophyte Labyrinthulomycetes Synurid Chrysomerophyceae Yellow-green algae Pinguiochrysidaceae Labyrinthula Placidozoa Chaetoceros Bigyra Oomycete Sagenista Bigyromonada Pedinellales Platysulcus Mastigomycotina Pirsonia Stramenopile Heterosigma akashiwo Dictyochales Ochrophyte Bicosoecida Brown algae Chromalveolata Diatom