Maduradinium pentagonum subsp. ovale
From dinoflaj2
subsp. ovale (Cookson and Eisenack, 1982, p.34, pl.1, figs.15-16) Lentin and Williams, 1985, p.230. Holotype: Cookson and Eisenack, 1982, pl.1, fig.16. Originally Maduradinium pentagonum var. ovale, subsequently (and now) Maduradinium pentagonum subsp. ovale. Age: Senonian. Parent: Maduradinium pentagonum