Back
Cyclonephelium castelcasiense ssp. prominentum

From Fensome et al., 2019:
Cyclonephelium? castelcasiense ssp. prominentum Marheinecke, 1992, p.73–74, pl.15, figs.1–4. Holotype: Marheinecke, 1992, pl.15, figs.1–4; Fauconnier and Masure, 2004, pl.30, figs.8–10. NOW Glaphyrocysta castelcasiensis subsp. prominenta. Originally Cyclonephelium? castelcasiense subsp. prominentum, subsequently (and now) Glaphyrocysta castelcasiensis subsp. prominenta. Contrary to the opinion of Lentin and Williams (1993, p.147), Williams et al. (1998, p.157) considered this name to be validly published. Age: late Maastrichtian.

---------------------------------------------------------------------------------------------------

Original descripition: Marheinecke, 1992, p. 73
Cyst habit marginate, lenticulate. Central body subsphaerical to ovaloidal. The antapex shows a asymmetrical protrusion, like a short, blunt horn. Wall composed of pedium and luxuria. Luxuria develops a clear granulation. Granulation on the dorsal surface intraareate surrounded by peniareae zones without or reduced granulation. On ventral surface granulation evenly developed. Lateral and antapical luxuria as a high number of thin, ?solid processes developed. The process length reaches 1/2 of the central bodies breadth. Distally the processes are connected to a granulate membrane, which covers the process bearing parts of the cyst completely. Areation: Indicated by the archaeopyle and the intraareate granulation on the dorsal surface. Archaeopyle: Apical, 1"+2"+3"+4". Operculum secate, ?foederate.

Affinities:
Marheinecke, 1992, p. 73: This subspecies differs from C. Castelcasiense in having longer processes and the better defined membrane.
Feedback/Report bug