Family Goniodomaceae Lindemann, 1928
Family within Order Gonyaulacales. Members of this family have a motile thecate cell as their principal life-cycle stage. Some species produce fossilizable cysts.
Genera included from this family:
Genus Alexandrium Halim emend. Balech, 1989
Genus Gambierdiscus Adachi and Fukuyo, 1979
Genus Pyrodinium Plate, 1906