Back
Dinogymnium kasachstanicum
Dinogymnium kasachstanicum (Vozzhennikova, 1967) Lentin and Williams, 1973
Originally Gymnodinium, subsequently Dinogymnium.
Tax. jr. synonym of Dinogymnium acuminatum Evitt et al., 1967, according to Lentin and Vozzhennikova, 1990.
Holotype: Vozzhennikova, 1967, pl.2, figs.4a-b; pl.3, figs.9a-b; Lentin and Vozzhennikova, 1990, pl.1, figs.3-7, text-fig.2
Locus typicus: Kazakhstan (Tavandy-Kaynar)
Stratum typicum: Campanian-Maastrichtian
Translation Vozzhennikova, 1967: Lentin and Vozzhennikova, 1990
Original description: Vozzhennikova, 1967, p. 45-46: Gymnodinium kasachstanicum
Theca biconical; epitheca somewhat smaller than hypotheca with a triangular outline and a bluntly rounded, somewhat attenuated apex. Hypotheca triangular with concave sides and the antapical end broken although apparently rounded. Transverse furrow deep, somewhat twisted to the left. Longitudinal furrow short and extending to the epitheca. Thecal surface covered with ribbing which extends from the transverse furrow in the direction of the poles; many of the ribs, especially those on the epitheca, do not reach the poles. Theca slender, pale yellow in color.
Originally Gymnodinium, subsequently Dinogymnium.
Tax. jr. synonym of Dinogymnium acuminatum Evitt et al., 1967, according to Lentin and Vozzhennikova, 1990.
Holotype: Vozzhennikova, 1967, pl.2, figs.4a-b; pl.3, figs.9a-b; Lentin and Vozzhennikova, 1990, pl.1, figs.3-7, text-fig.2
Locus typicus: Kazakhstan (Tavandy-Kaynar)
Stratum typicum: Campanian-Maastrichtian
Translation Vozzhennikova, 1967: Lentin and Vozzhennikova, 1990
Original description: Vozzhennikova, 1967, p. 45-46: Gymnodinium kasachstanicum
Theca biconical; epitheca somewhat smaller than hypotheca with a triangular outline and a bluntly rounded, somewhat attenuated apex. Hypotheca triangular with concave sides and the antapical end broken although apparently rounded. Transverse furrow deep, somewhat twisted to the left. Longitudinal furrow short and extending to the epitheca. Thecal surface covered with ribbing which extends from the transverse furrow in the direction of the poles; many of the ribs, especially those on the epitheca, do not reach the poles. Theca slender, pale yellow in color.