From Fensome et al., 2019:
Cyclonephelium castelcasiense "subsp. castelcasiense". Autonym. Holotype: Corradini, 1973, pl.24, fig.2; Fauconnier and Masure, 2004, pl.30, figs.3–7. NOW Glaphyrocysta castelcasiensis subsp. castelcasiensis. Originally Cyclonephelium? castelcasiense subsp. castelcasiense, subsequently (and now) Glaphyrocysta castelcasiensis subsp. castelcasiensis.

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For description see Cyclonephelium castelcasiense