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Apteodinium suibinense
From Fensome et al., 2019:
Apteodinium suibinense Lentin and Williams, 1985, p.23. Holotype: Yu Jingxian, 1982, pl.1, fig.14. Originally Apteodinium reticulatum Yu Jingxian (name illegitimate), subsequently (and now) Apteodinium suibinense. Substitute name for: Apteodinium reticulatum Yu Jingxian, 1982, p.244, pl.1, figs.13–14 (an illegitimate name). Age: Late Jurassic–
Early Cretaceous.
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Description:
Cysts elliptical or irregularly and broadly elliptical in outline. Periphragm only. Reticular ridges on surface linked to form irregular lattice. Apical horn clavate, truncated at end, about 29 - 32.2 µm long.
Paracingulum and parasulcus do not show. A polygonal thinning zone sometimes observed below apical horn, equivalent perhaps to archeopyle position.
Dimensions:
Size: Cysts 115 - 126.5 µm long and 80.5 - 87.5 µm wide.
Affinities/Comparison:
This new species is distinguished from other species in the genus by the conjoining of its surface ridges to form a lattice and by its long apical horns.
Apteodinium suibinense Lentin and Williams, 1985, p.23. Holotype: Yu Jingxian, 1982, pl.1, fig.14. Originally Apteodinium reticulatum Yu Jingxian (name illegitimate), subsequently (and now) Apteodinium suibinense. Substitute name for: Apteodinium reticulatum Yu Jingxian, 1982, p.244, pl.1, figs.13–14 (an illegitimate name). Age: Late Jurassic–
Early Cretaceous.
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Description:
Cysts elliptical or irregularly and broadly elliptical in outline. Periphragm only. Reticular ridges on surface linked to form irregular lattice. Apical horn clavate, truncated at end, about 29 - 32.2 µm long.
Paracingulum and parasulcus do not show. A polygonal thinning zone sometimes observed below apical horn, equivalent perhaps to archeopyle position.
Dimensions:
Size: Cysts 115 - 126.5 µm long and 80.5 - 87.5 µm wide.
Affinities/Comparison:
This new species is distinguished from other species in the genus by the conjoining of its surface ridges to form a lattice and by its long apical horns.