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Batiacasphaera biornata
Batiacasphaera biornata, (Jiabo, 1978), Jan du Chêne et al., 1985
Originally Tenua biornata, subsequently Kallosphaeridium biparatum, thirdly (and now) Batiacasphaera biornata, fourthly Sentusidinium biornatum. See also Kallosphaeridium biornatum (combination not validly published).
He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al., 1989, transferred this species to Sentusidinium Sarjeant and Stover, 1978. Lentin and Williams, 1993, followed Lentin and Williams, 1989, in retaining it in Batiacasphaera. but He Chengquan et al. (2009, p.249) retained it in Sentusidinium.
Holotype: Jiabo, 1978, pl.22, fig.24
Age: Early Tertiary
Originally Tenua biornata, subsequently Kallosphaeridium biparatum, thirdly (and now) Batiacasphaera biornata, fourthly Sentusidinium biornatum. See also Kallosphaeridium biornatum (combination not validly published).
He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al., 1989, transferred this species to Sentusidinium Sarjeant and Stover, 1978. Lentin and Williams, 1993, followed Lentin and Williams, 1989, in retaining it in Batiacasphaera. but He Chengquan et al. (2009, p.249) retained it in Sentusidinium.
Holotype: Jiabo, 1978, pl.22, fig.24
Age: Early Tertiary