Citation: Dinogymnioideae (Sarjeant and Downie 1974)
Fensome et al. 1993b.
Diagnosis: Ptychodiscaceans in which dinosporin is the principal element in the pellicle and in which the ecdysal aperture is apical. Type genus: Dinogymnium Evitt et al. 1967; fossil - Late Cretaceous (Maastrichtian).
Alisogymnium Lentin and Vozzhennikova 1990; Late Cretaceous (Senonian). Amphigymnium Lentin and Vozzhennikova 1990; Late Cretaceous (Turonian-Senonian). Dinogymnium Evitt et al. 1967; Late Cretaceous (Maastrichtian). Yolkinigymnium Lentin and Vozzhennikova 1990; Late Cretaceous (Campanian-Maastrichtian).
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