Oligosphaeridium xinjiangense
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xinjiangense He Chengquan, 1991, p.133-134, pl.26, figs.15-16; pl.59, figs.5-6; text-fig.23. Holotype: He Chengquan, 1991, pl.26, fig.16; text-fig.23. Age: Paleocene-Mid Eocene.
Parent: Oligosphaeridium