Rhombodinium rotundatum

?rotundatum Balteş, 1969, p.35, pl.5, fig.10 ex Lentin and Williams, 1973, p.121.  Holotype: Balteş, 1969, pl.5, fig.10.  Originally Wetzeliella (name not validly published), subsequently (and now) Rhombodinium.  Questionable assignment: Williams et al. (2015, p.311).  Taxonomic junior synonym (at specific rank): Rhombodinium draco forma freienwaldense (as Rhombodinium freienwaldense), by implication in Costa and Downie (1979, p.44), who believed Rhombodinium freienwaldense to be the senior name — however, Grabowska in Malinowskiej and Piwockiego (1996, p.343) retained Rhombodinium freienwaldense.  This name was not validly published in Balteş (1969) since that author considered it a provisional designation.  Age: Oligocene.

Parent: Rhombodinium