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Nelsoniella aceras
From Fensome et al., 2019:
Nelsoniella aceras Cookson and Eisenack, 1960a, p.4, pl.1, figs.12–13. Holotype: Cookson and Eisenack, 1960a, pl.1, fig.12. Age: Santonian–Campanian.
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Locus typicus: Carnarvon Basin, W Australia
Stratum typicum: Santonian-Campanian
Original description: Cookson and Eisenack, 1960, p.4
Shell approximately circular, somewhat longer than broad or vice versa, the extrme apex more or less deeply concave. Epitheca sparsely or densely ornamented with large granulaes or short wavy ridges; the thickenings are frequently arranged in two rather prominent, curved ridges which extend from base to apex. Surface of hypotheca smooth. The wall of the capsule is thin and very faintly granular. The pylome is semicircular to trapezoid.
Dimensions: Holotype: 78 µm long, 87 µm broad, pylome 28x35 µm. Range 64-92 µm long, 62-108 µm broad.
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Nelsoniella aceras Cookson and Eisenack, 1960a, has an approximately circular pericyst somewhat longer than broad or vice versa, the extreme apex more or less deeply concave. Epicyst sparsely or densely ornamented with large granules or short wavy ridges; the thickenings are frequently arranged in two rather prominent curved ridges which extend from base to apex. Surface of hypocyst smooth. The wall of the endocyst is thin and very faintly granular. Size; length 64-92 µm, width 62-108 µm.
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Nelsoniella aceras Cookson and Eisenack, 1960a, p.4, pl.1, figs.12–13. Holotype: Cookson and Eisenack, 1960a, pl.1, fig.12. Age: Santonian–Campanian.
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Locus typicus: Carnarvon Basin, W Australia
Stratum typicum: Santonian-Campanian
Original description: Cookson and Eisenack, 1960, p.4
Shell approximately circular, somewhat longer than broad or vice versa, the extrme apex more or less deeply concave. Epitheca sparsely or densely ornamented with large granulaes or short wavy ridges; the thickenings are frequently arranged in two rather prominent, curved ridges which extend from base to apex. Surface of hypotheca smooth. The wall of the capsule is thin and very faintly granular. The pylome is semicircular to trapezoid.
Dimensions: Holotype: 78 µm long, 87 µm broad, pylome 28x35 µm. Range 64-92 µm long, 62-108 µm broad.
--------------------------------------------------
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Nelsoniella aceras Cookson and Eisenack, 1960a, has an approximately circular pericyst somewhat longer than broad or vice versa, the extreme apex more or less deeply concave. Epicyst sparsely or densely ornamented with large granules or short wavy ridges; the thickenings are frequently arranged in two rather prominent curved ridges which extend from base to apex. Surface of hypocyst smooth. The wall of the endocyst is thin and very faintly granular. Size; length 64-92 µm, width 62-108 µm.
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