Kallosphaeridium bellulum
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"?bellulum" (Jiabo, 1978, p.51, pl.23, figs.14–16) Lentin and Williams, 1981, p.160. Holotype: Jiabo, 1978, pl.23, fig.15. NOW Batiacasphaera?. Originally Tenua Eisenack, subsequently Kallosphaeridium?, thirdly Batiacasphaera, fourthly (and now) Batiacasphaera?, fifthly Sentusidinium. Questionable assignment: Lentin and Williams (1981, p.160). Age: Early Tertiary.
Parent: Kallosphaeridium