Kallosphaeridium biornatum Jiabo 1978

"biornatum" (Jiabo, 1978, p.52, pl.22, figs.21-29; pl.23, figs.1-4) Lentin and Williams, 1981, p.160.  Holotype: Jiabo, 1978, pl.22, fig.24.  Combination not validly published: basionym not fully referenced.  NOW Batiacasphaera biornata.  Originally Tenua biornata, subsequently Kallosphaeridium biornatum (combination not validly published), thirdly Kallosphaeridium biparatum, fourthly (and now) Batiacasphaera biornata, fifthly Sentusidinium biornatum.  Age: Early Oligocene.

Parent: Kallosphaeridium