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Ovoidinium ovale
Ovoidinium ovale (Cookson and Eisenack, 1970) Lentin and Williams, 1976
Originally Ascodinium, subsequently (and now) Ovoidinium.
Helenes, 1983, retained this species in Ascodinium Cookson and Eisenack 1960. Lentin and Williams, 1989, retained it in Ovoidinium.
Holotype: Cookson and Eisenack, 1970, pl.13, fig.8
Locus typicus: Madura No. 1 Bore,
Stratum typicum: Albian-Cenomanian
Original description: Cookson and Eisenack, 1970, p.145: Ascodinium ovalis
Shell smooth, slightly flattened, oval in outline, thin-walled, with a large apical archeopyle and a short antapical projection slightly to one side of the antapex.
Capsule completely separated from the wall of the shell with a relatively thin, unornamented wall except at both apex and antapex, where small dot-like thickenings are evident. The capsule opens by the complete detachment of the apex.
Dimensions: Holotype: shell c. 35 Ám long, c. 40 Ám broad. Capsule c. 40x35 Ám.
Originally Ascodinium, subsequently (and now) Ovoidinium.
Helenes, 1983, retained this species in Ascodinium Cookson and Eisenack 1960. Lentin and Williams, 1989, retained it in Ovoidinium.
Holotype: Cookson and Eisenack, 1970, pl.13, fig.8
Locus typicus: Madura No. 1 Bore,
Stratum typicum: Albian-Cenomanian
Original description: Cookson and Eisenack, 1970, p.145: Ascodinium ovalis
Shell smooth, slightly flattened, oval in outline, thin-walled, with a large apical archeopyle and a short antapical projection slightly to one side of the antapex.
Capsule completely separated from the wall of the shell with a relatively thin, unornamented wall except at both apex and antapex, where small dot-like thickenings are evident. The capsule opens by the complete detachment of the apex.
Dimensions: Holotype: shell c. 35 Ám long, c. 40 Ám broad. Capsule c. 40x35 Ám.