Citation: Ovoidinioideae (Norris 1978)
Bujak and Davies 1983.
Diagnosis: Peridiniaceans in which the episomal tabulation is bipesioid and the Kofoid second anterior intercalary plate is hexa (i.e. six-sided). The cyst wall is composed of dinosporin and lacks a calcareous layer (or layers). The archeopyle is centred about the apical region. Type genus: Ovoidinium Davey 1970; fossil - Cretaceous (Cenomanian).
Ascodinium Cookson and Eisenack 1960a; Cretaceous (Albian-Cenomanian). Bohaidina Jiabo 1978; Early Tertiary.
Bosedinia He Chengquan 1984b; Late Eocene-Oligocene.
Cepadinium Duxbury 1983; Cretaceous (Aptian). ?Corculodinium Batten and J.K. Lister 1988; Cretaceous (Barremian). ?Craspedodinium Cookson and Eisenack 1974; Cretaceous (Aptian-Albian). Epelidosphaeridia Davey 1969a; Cretaceous (Cenomanian). Holmwoodinium Batten 1985; Cretaceous (Barremian). Huanghedinium Zhu Shenzhao, He Chengquan and Jin Guangxing in He Chengquan et al. 1989; Early Tertiary. Leberidocysta Stover and Evitt 1978; Cretaceous (Albian-Cenomanian). Ovoidinium Davey 1970; Cretaceous (Cenomanian).
Parabohaidina Jiabo 1978; Early Tertiary.
?Paraperidinium Jin Guangxing, He Chengquan and Zhu Shenzhao in He Chengquan et al. 1989; Early Tertiary. ?Ripea Batten 1985; Cretaceous (?Hauterivian).
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