Polysphaeridium taiwanianum (Huang Tsengchieng, 1981, p.50, pl.2, figs.3–4) Lentin and Williams, 1993, p.535. Holotype: designated but not identified to an illustration.
The new combination Polysphaeridium taiwanianum is necessitated by the acceptance of Hemicystodinium as a tax. jr. synonym of Polysphaeridium Davey and Williams, 1966.
Holotype: listed but illustration not specified
Age: Miocene