Palaeohystrichodinium cavispineum Zheng Yuefang and Liu Xuexian in Liu Zhili et al., 1992, p.76, pl.7, fig.29; text-fig.6.

Holotype: Liu Zhili et al., 1992, pl.7, fig.29; text-fig.6.
Age: Early Tertiary.

Original description (Liu Zhili et al., 1992):