Kallosphaeridium biornatum Jiabo 1978
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"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
