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Batiacasphaera biornata ssp. biornata
Batiacasphaera biornata ssp. biornata
Autonym.
Originally Tenua biornata ssp. biornata, subsequently Kallosphaeridium biparatum ssp. biparatum, thirdly (and now) Batiacasphaera biornata ssp. biornata, fourthly Sentusidinium biornatum ssp. biornatum. Lentin and Williams (1993, p.53) retained this species in Batiacasphaera but He Chengquan et al. (2009, p.249) retained it in Sentusidinium.
Age: Early Tertiary.
Autonym.
Originally Tenua biornata ssp. biornata, subsequently Kallosphaeridium biparatum ssp. biparatum, thirdly (and now) Batiacasphaera biornata ssp. biornata, fourthly Sentusidinium biornatum ssp. biornatum. Lentin and Williams (1993, p.53) retained this species in Batiacasphaera but He Chengquan et al. (2009, p.249) retained it in Sentusidinium.
Age: Early Tertiary.