From Williams et al., 2017:

[Zhongyuandinium Zhu Shenzhao et al. in He Chengquan et al., 1989, p.71–72; Emendation: Mao Shaozhi et al., 1995, p. 61-62.

Type species: Zhongyuandinium decorsum, Zhu Shenzhao et al. in He Chengquan et al., 1989 (pl.10, fig.11; text-fig.12)]