Cyclonephelium brevispinatum
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"brevispinatum" (Millioud, 1969, p.427-428, pl.1, figs.8-9) Below, 1981a, p.11 [February]. Holotype: Millioud, 1969, pl.1, figs.8-9. NOW Circulodinium brevispinatum. Originally Cyclonephelium distinctum var. brevispinatum, subsequently Cyclonephelium distinctum subsp. brevispinatum, thirdly Cyclonephelium brevispinatum, fourthly (and now) Circulodinium brevispinatum. Yun Hyesu (1981, p.51; May) also proposed this combination. Age: Late Hauterivian-Early Aptian.
Parent: Cyclonephelium