Kallosphaeridium bellulum

"?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