Brigantedinium asymmetricum, Matsuoka, 1987, p.56, pl.5, figs. 10-12; text-fig.4B ex Head, 1996b, p.1231.

This name was not validly published in Matsuoka (1987, p.56) since the generic name Brigantedinium was not validly published at that time.

Holotype: Matsuoka, 1987, pl.5, figs.10-11.
Age: Holocene.