Microdinium horridum

?horridum (Below, 1987b, p.49–50, pl.17, figs.1–6; text-figs.11a–h) Lentin and Williams, 1989, p.245.  Holotype: Below, 1987b, pl.17, figs.1–6; Fensome et al., 1993a, figs.1–4 — p.1229.  Originally Phanerodinium, subsequently (and now) Microdinium?.  Lentin and Williams (1993, p.426) retained this species in Microdinium. Questionable assignment: Lentin and Williams (1989, p.245).  Age: middle Albian–early Cenomanian.

Parent: Microdinium