Cyclonephelium semitectum
From dinoflaj3
"semitectum" Bujak in Bujak et al., 1980, p.46,48,50, pl.14, figs.2–9; text-fig.13. Holotype: Bujak et al., 1980, pl.14, figs.4–6; Fauconnier and Masure, 2004, pl.33, figs.10–11. NOW Glaphyrocysta. Originally Cyclonephelium, subsequently (and now) Glaphyrocysta, thirdly Riculacysta (combination not validly published). Taxonomic senior synonym: Riculacysta perforata, according to Köthe (1990, p.50) — however, Kirsch (1991, p.129) retained Cyclonephelium (as Riculacysta, now Glaphyrocysta) semitectum. Age: middle Eocene (see Aubry, 1986).
Parent: Cyclonephelium