Microdinium irregulare

"irregulare" Clarke and Verdier, 1967, p.65–66, pl.7, figs.5–8; text-fig.27.  Holotype: Clarke and Verdier, 1967, pl.7, fig.5.  Taxonomic senior synonym: Micrhystridium (as Phanerodinium, now Rhiptocorys) veligera, according to Below (1987b, p.56).  Age: Cenomanian–Santonian.

Parent: Microdinium