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Palaeosphaerium infrequens
From Fensome et al., 2019:
Palaeosphaerium *infrequens Górka, 1965, p.308, pl.2, figs.7a–b. Holotype: Górka, 1965, pl.2, figs.7a–b. Sarjeant (1978a, p.38) indicated that this species name should be restricted to the holotype. Age: early Kimmeridgian.
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Original description (Górka, 1965) Not yet translated from French.
Holotypus: Prep. Y4.
Stratum typicum: Astartien.
Locus typicus: Magnuszew, depth 1331.2 m.
Derivatio nominis: Lat. infrequens - uncommon.
Material. - One specimen, well-preserved.
Dimensions (in µm): (prep. Y4)
Theca diameter without spines 47.00
Spine length 1.74-3.48
Description. Spherical-polyhedral theca, with imprecise tabulation and transverse groove. There is no longitudinal groove, nor apical horn. Very short spines on the sutures, between the plates. Very finely reticulated surface. Remarks. - Palaeosphaerium infrequens n.gen., n.sp. does not recall any of the representatives of the Dinoflagellae described so far. Distribution. - Astartian of Magnuszew (depth 1331.2 m).
Palaeosphaerium *infrequens Górka, 1965, p.308, pl.2, figs.7a–b. Holotype: Górka, 1965, pl.2, figs.7a–b. Sarjeant (1978a, p.38) indicated that this species name should be restricted to the holotype. Age: early Kimmeridgian.
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Original description (Górka, 1965) Not yet translated from French.
Holotypus: Prep. Y4.
Stratum typicum: Astartien.
Locus typicus: Magnuszew, depth 1331.2 m.
Derivatio nominis: Lat. infrequens - uncommon.
Material. - One specimen, well-preserved.
Dimensions (in µm): (prep. Y4)
Theca diameter without spines 47.00
Spine length 1.74-3.48
Description. Spherical-polyhedral theca, with imprecise tabulation and transverse groove. There is no longitudinal groove, nor apical horn. Very short spines on the sutures, between the plates. Very finely reticulated surface. Remarks. - Palaeosphaerium infrequens n.gen., n.sp. does not recall any of the representatives of the Dinoflagellae described so far. Distribution. - Astartian of Magnuszew (depth 1331.2 m).