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Hystrichosphaeridium hymenohystrichum
Hystrichosphaeridium hymenohystrichum Zheng Yuefang and Liu Xuexian in Liu Zhili et al., 1992, p.71, pl.14, figs.3-5. Holotype: Liu Zhili et al., 1992, pl.14, fig.5. Questionable assignment: Zheng Yuefang and Liu Xuexian in Liu Zhili et al. (1992, p.71). Age: early Tertiary.