Laciniadinium arcticum
From dinoflaj2
arcticum (Manum and Cookson, 1964, p.18-19, pl.6, figs.1-4) Lentin and Williams, 1980, p.41. Holotype: Manum and Cookson, 1964, pl.6, fig.1. Originally Diconodinium, subsequently (and now) Laciniadinium. Taxonomic junior synonym: Diconodinium acutum, according to Morgan (1977, p.126). Age: Cenomanian.
Parent: Laciniadinium