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Cyclonephelium operculatum
Cyclonephelium operculatum Yu Jingxian, 1982, p.252-253, pl.7, figs.20-22. Holotype: Yu Jingxian, 1982, pl.7, fig.21. Questionable assignment: Fauconnier and Londeix in Fauconnier and Masure (2004, p.147) as a problematic species. Age: Late Jurassic-Early Cretaceous.
Description: Cysts circular or elliptical in outline, dorsoventrally compressed. Periphragm thin, about 0.5 µm thick. A ring of perforations along cyst periphery. Perforations circular or elliptical, 4 - 6 µm in diameter. Inner body subcircular. Surface granulate or finely reticulate. Apical archaeopyle.
Size: Cysts 44 - 50 µm long and 36 - 46 µm wide.
Comparison: The new species has some similarity to C. membraniphorum Cookson & Eisenack 1962 in the ring of perforations along the periphery of the cyst but is distinguished from it by the fact that it has small individuals, its perforations are circular or elliptical. and the inner body has granulate or reticulate ornamentation.
Description: Cysts circular or elliptical in outline, dorsoventrally compressed. Periphragm thin, about 0.5 µm thick. A ring of perforations along cyst periphery. Perforations circular or elliptical, 4 - 6 µm in diameter. Inner body subcircular. Surface granulate or finely reticulate. Apical archaeopyle.
Size: Cysts 44 - 50 µm long and 36 - 46 µm wide.
Comparison: The new species has some similarity to C. membraniphorum Cookson & Eisenack 1962 in the ring of perforations along the periphery of the cyst but is distinguished from it by the fact that it has small individuals, its perforations are circular or elliptical. and the inner body has granulate or reticulate ornamentation.