Kallosphaeridium biornatum ssp. crassum (Jiabo, 1978) Lentin and Williams, 1981

Combination not validly published: basionym not fully referenced.
NOW Sentusidinium biornatum subsp. crassum. Originally Tenua biornata subsp. crassa, subsequently Kallosphaeridium biornatum subsp. crassum (combination not validly published), thirdly Kallosphaeridium biparatum subsp. crassum, fourthly Batiacasphaera biornata subsp. crassa, fifthy (and now) Sentusidinium biornatum subsp. crassum.

Holotype: Jiabo, 1978, pl.23, fig.3
Age: Early Tertiary