Tenua brevispinosa
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"brevispinosa" (Pocock, 1962, p.81, pl.14, figs.222–223) Brideaux, 1977, p.15. Emendation: Brideaux, 1977, p.15–16, as Tenua brevispinosa. Holotype: Pocock, 1962, pl.14, fig.222; Jansonius, 1986, pl.4, fig.6; Fauconnier and Masure, 2004, pl.14, figs.7–8. NOW Circulodinium. Originally Palaeohystrichophora, subsequently Tenua Eisenack, thirdly Canningia?, fourthly Cyclonephelium, fifthly (and now) Circulodinium. Age: Barremian.
Parent: Tenua_Eisenack 1958a