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Hystrichosphaeridium calospinum
From Fensome et al., 2019:
Hystrichosphaeridium calospinum He Chengquan, Zhu Shenzhao and Jin Guangxian in He Chengquan et al., 1989, p.47–48, pl.20, fig.15. Holotype: He Chengquan et al., 1989, pl.20, fig.15. Mao Shaozhi et al. (1995, p.99) indicated that this name should be restricted to the holotype. Age: early Tertiary.
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Hystrichosphaeridium calospinum He Chengquan, Zhu Shenzhao and Jin Guangxian in He Chengquan et al., 1989, p.47–48, pl.20, fig.15. Holotype: He Chengquan et al., 1989, pl.20, fig.15. Mao Shaozhi et al. (1995, p.99) indicated that this name should be restricted to the holotype. Age: early Tertiary.
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