Hystrichodinium alatum

"alatum" Cookson and Eisenack, 1962b, p.487–488, pl.2, figs.1–4.  Emendation: Sarjeant, 1966b, p.147, as Xiphophoridium alatum.  Holotype: Cookson and Eisenack, 1962b, pl.2, fig.1; Fensome et al., 1993a, fig.1 — p.893; Fauconnier and Masure, 2004, pl.80, fig.6.  NOW Dinopterygium.  Originally Hystrichodinium, subsequently Xiphophoridium, thirdly Pyramidium (combination illegitimate, since the generic name is illegitimate), fourthly Oodnadattia, fifthly (and now) Dinopterygium.  Age: Albian–Cenomanian.

Parent: Hystrichodinium