Circulodinium brevispinatum
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brevispinatum (Millioud, 1969, p.427–428, pl.1, figs.8–9) Fauconnier in Fauconnier and Masure 2004, p.114. Holotype: Millioud, 1969, pl.1, figs.8–9. Originally Cyclonephelium distinctum var. brevispinatum, subsequently Cyclonephelium distinctum subsp. brevispinatum, thirdly Cyclonephelium brevispinatum, fourthly (and now) Circulodinium brevispinatum. This combination was not validly published by Below in Davey (1994, p.13) since the basionym was not fully referenced. Age: late Hauterivian–early Aptian.
Parent: Circulodinium