1. Subfamily Gambierdiscoideae Fensome, F.J.R.Taylor, G.Norris, Sarjeant, Wharton & G.L.William, 1993
   1. Genus Gambierdiscus R.Adachi & Y.Fukuyo, 1979
2. Subfamily Ostreopsidoideae Gottschling, Tillmann & Elbrächter, 2021
   1. Genus Alexandrium Halim, 1960
   2. Genus Ostreopsis Johs.Schmidt, 1901
3. Subfamily Pyrodinioideae Fensome, F.J.R.Taylor, G.Norris, Sarjeant, Wharton & G.L.William, 1993 †
   1. Genus Pyrodinium L.Plate, 1906

marine, brackish

Guiry, M.D. & Guiry, G.M. (2025). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Pyrocystaceae (Schütt, 1896) Lemmermann, 1899. Accessed through: Lundholm, N.; Bernard, C.; Churro, C.; Escalera, L.; Hoppenrath, M.; Iwataki, M.; Larsen, J.; Mertens, K.; Moestrup, Ø.; Murray, S.; Salas, R.; Tillmann, U.; Zingone, A. (Eds) (2009 onwards) IOC-UNESCO Taxonomic Reference List of Harmful Micro Algae at: https://www.marinespecies.org/hab/aphia.php?p=taxdetails&id=109444 on 2026-05-03

Lundholm, N.; Bernard, C.; Churro, C.; Escalera, L.; Hoppenrath, M.; Iwataki, M.; Larsen, J.; Mertens, K.; Murray, S.; Probert, I.; Salas, R.; Tillmann, U.; Zingone, A. (Eds) (2009 onwards). IOC-UNESCO Taxonomic Reference List of Harmful Microalgae. Pyrocystaceae (Schütt, 1896) Lemmermann, 1899. Accessed at: https://marinespecies.org/hab/aphia.php?p=taxdetails&id=109444 on 2026-05-03

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