Operculodinium centrocarpum subsp. minutum

subsp. minutum Mao Shaozhi, 1989, p.141-142, pl.29, figs.12-15,17-25,30-31.  Holotype: Mao Shaozhi, 1989, pl.29, fig.15.  Originally (and now) Operculodinium centrocarpum subsp. minutum, subsequently Opaeopsomus wapellensis subsp. minutus.  Lentin and Williams (1993, p.465) inadvertently cited this taxon as Opaeopsomus wapellensis subsp. minutus.  Age: Quaternary. Parent: Operculodinium centrocarpum