Sentusidinium bifidum
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?bifidum (Jiabo, 1978, p.51-52, pl.22, figs.7-16) He Chengquan, Zhu Shenzhao and Jin Guangxing in He Chengquan et al., 1989, p.66-67, pl.16, figs.17-23. Holotype: Jiabo, 1978, pl.22, fig.8. Originally Tenua Eisenack, subsequently Cleistosphaeridium?, thirdly (and now) Sentusidinium. Questionable assignment: Xu Jinli et al. (1997, p.46); and Courtinat in Fauconnier and Masure (2004, p.486) as a problematic species. Islam (1993, p.87) also proposed this combination. Age: Early Tertiary.
Parent: Sentusidinium