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Pelagophyceae is a class of heterokont algae. It is the sister group of Dictyochophyceae. All known species are marine. They can be single-celled (coccoid or flagellate), palmelloid or filamentous. Some members (''Pelagomonas'') belong to picoplankton, and some other (''Sarcinochrysis'') are macroscopic attached organisms. The class contains 13 genera, 3 families and 2 orders (2017): * Order Pelagomonadales Andersen & Saunders 1993 ** Family Pelagomonadaceae Andersen & Saunders 1993 *** genus ''Ankylochrysis'' Billard 1995 *** genus ''Aureococcus'' Hargraves & Sieburth 1988 *** genus ''Chrysophaeum'' Lewis & Bryan 1941 non Taylor 1951 *** genus ''Pelagococcus'' Norris 1977 *** genus ''Pelagomonas'' Andersen & Saunders 1993 * Order Sarcinochrysidales Gayral & Billard 1977 ** Family Chrysocystaceae Melkonian, Yoon & Andersen 2018 *** genus ''Chrysocystis'' Lobban, Honda & Chihara 1995 *** genus ''Chrysoreinhardia'' Billard 2000 *** genus ''Sungminbooa'' Yoon & Andersen 2018 ** Family Sarcinochrysidaceae Gayral & Billard 1977 *** genus ''Andersenia'' Wetherbee & Waller 2015 *** genus ''Arachnochrysis'' Andersen & Han 2018 *** genus ''Aureoscheda'' Wynne & Andersen 2014 *** genus ''Aureoumbra'' Stockwell et al. 1997 *** genus ''Chrysonephos'' Taylor 1952 *** genus ''Nematochrysopsis'' Billard 2000 *** genus ''Pelagospilus'' Andersen & Graf 2018 *** genus ''Sarcinochrysis'' Geitler 1930 *** genus ''Sargassococcus'' Andersen & Han 2018 It is expected that molecular studies will add more species to this list.

References

Category:Algae classes Category:Heterokont classes Category:Ochrophyta {{Heterokont-stub