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Gonyaulacysta pannonica
Gonyaulacysta pannonica (Nagy, 1965) Lentin and Williams, 1973
Now Cribroperidinium?. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly Millioudodinium?, fourthly (and now) Cribroperidinium?.
Holotype: Nagy, 1965, pl.1, figs.1-2, pl.2, fig.10; Jan du Chêne et al., 1986, pl.31, figs.1-4
Age: Early Pliocene
Original description, Nagy 1965: Gonyaulax pannonicus n. sp. (Table I, Figs 1 and 2. Table II, Fig. 10)
Holotype: in the Pollen Laboratory of the Hungarian Geological Institute; Hidas, bore-hole No. 53; sample No. 4; Plate 1; cross-table numbers: 28.9 to 106.2.
Locus typicus: Hidas, Mecsek Mountains.
Stratum typicum: Pannonian light grey silty clayey marl; Hidas, bore-hole No. 53; 132.5 to 134.8 m.
Description and diagnosis: 65 x 61 µm large sphaeroid form. Epitheca and hypotheca of nearly equal dimensions. Epitheca tabulation: 3, 2a, 6’’, girdle helicoidal 6 g, hypotheca rounded-off, 6’’’, 1p, 1’’’’. The outline of tabulations edged, granulated. Surface corroded (Figs 1 and 2).
Besides the holotype and one more specimen, but of higher damaged state came to light.
Remark: Reminds mostly of the figure of the recent Gonyaulax polyedra (Grassé, I. p. 351, Fig. 259).
Differential diagnosis: Somewhat smaller than Gonyaulax margaritifera Cooks. – Eis. 1960 (micropaleont. 1960, Vol. 6 No. 1 p 5-6) and 6’’ attached to the longitudinal furrow lager. Fairly similar to the hypothetic illustration showing the shell tabulation in the Figs 7 to 10, which follow the description of Gonyaulax pachyderma Defl. 1938, p. 25-26, but is decisively separated from the Figs 6 to 10 of the illustration VII by its lamella-like dividing walls, spines and the form of the transversal furrow.
Now Cribroperidinium?. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly Millioudodinium?, fourthly (and now) Cribroperidinium?.
Holotype: Nagy, 1965, pl.1, figs.1-2, pl.2, fig.10; Jan du Chêne et al., 1986, pl.31, figs.1-4
Age: Early Pliocene
Original description, Nagy 1965: Gonyaulax pannonicus n. sp. (Table I, Figs 1 and 2. Table II, Fig. 10)
Holotype: in the Pollen Laboratory of the Hungarian Geological Institute; Hidas, bore-hole No. 53; sample No. 4; Plate 1; cross-table numbers: 28.9 to 106.2.
Locus typicus: Hidas, Mecsek Mountains.
Stratum typicum: Pannonian light grey silty clayey marl; Hidas, bore-hole No. 53; 132.5 to 134.8 m.
Description and diagnosis: 65 x 61 µm large sphaeroid form. Epitheca and hypotheca of nearly equal dimensions. Epitheca tabulation: 3, 2a, 6’’, girdle helicoidal 6 g, hypotheca rounded-off, 6’’’, 1p, 1’’’’. The outline of tabulations edged, granulated. Surface corroded (Figs 1 and 2).
Besides the holotype and one more specimen, but of higher damaged state came to light.
Remark: Reminds mostly of the figure of the recent Gonyaulax polyedra (Grassé, I. p. 351, Fig. 259).
Differential diagnosis: Somewhat smaller than Gonyaulax margaritifera Cooks. – Eis. 1960 (micropaleont. 1960, Vol. 6 No. 1 p 5-6) and 6’’ attached to the longitudinal furrow lager. Fairly similar to the hypothetic illustration showing the shell tabulation in the Figs 7 to 10, which follow the description of Gonyaulax pachyderma Defl. 1938, p. 25-26, but is decisively separated from the Figs 6 to 10 of the illustration VII by its lamella-like dividing walls, spines and the form of the transversal furrow.