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