Pyramidium alatum

"*alatum" (Cookson and Eisenack, 1962b, p.487-488, pl.2, figs.1-4) Clarke and Verdier, 1967, p.40.  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 Xiphophoridium.  Originally Hystrichodinium, subsequently (and now) Xiphophoridium, thirdly Pyramidium, fourthly Oodnadattia.  Age: Albian-Cenomanian.

Parent: Pyramidium