Family Gonyaulacaceae Subfamily uncertain
Fossil genera: Actinotheca Cookson and Eisenack 1960a; Cretaceous (Turonian).
?Chytroeisphaeridia ( Sarjeant, 1962a) Downie and Sarjeant 1965; Jurassic (Oxfordian).
?Cometodinium Deflandre and Courteville 1939; Cretaceous (Turonian).
?Coronifera Cookson and Eisenack 1958; Cretaceous (Albian).
?Foucheria Monteil 1992a; Cretaceous (Valanginian)
?Hystrichosphaerina Alberti 1961; Cretaceous (Barremian-Turonian).
?Komewuia Cookson and Eisenack 1960b; Jurassic (?Tithonian).
?Lagenorhytis Duxbury 1979b; Cretaceous (Valanginian).
?Lanternosphaeridium Morgenroth 1966a; Early Eocene.
?Neodiacrodium Fedorova-Shakhmundes 1976; Cretaceous (Valanginian).
?Sepispinula Islam 1993; Cretaceous (Albian-Cenomanian).
?Stephodinium Deflandre 1936a; Cretaceous (Senonian).
?Yalkalpodinium Morgan 1980; Cretaceous (Neocomian-Albian).
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