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Oodnadattia alata
Oodnadattia "alata" (Cookson and Eisenack, 1962b, p.487–488, pl.2, figs.1–4) Below, 1981a, p.107. 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.
Original description: Cookson and Eisenack 1962, p. 487: Hystrichodinium alatum
Diagnosis: Shell oval to nearly globular, divided equally by a slightly helicoid girdle. Shell membrane thin, two-layered, outer membrane forming conspicuous wings at apex, antapex, and about the girdle, in which regions it is prolonged into a relatively large number of hollow tapering processes which are arranged in well-defined whorls. Shell tabulated, with pre- and postequatorial plates and apparently one antapical plate; otherwise the tabulation could not be determined. The surface of the plates is ornamented with minute tubercular thickenings which taper to sharp points.
Original description: Cookson and Eisenack 1962, p. 487: Hystrichodinium alatum
Diagnosis: Shell oval to nearly globular, divided equally by a slightly helicoid girdle. Shell membrane thin, two-layered, outer membrane forming conspicuous wings at apex, antapex, and about the girdle, in which regions it is prolonged into a relatively large number of hollow tapering processes which are arranged in well-defined whorls. Shell tabulated, with pre- and postequatorial plates and apparently one antapical plate; otherwise the tabulation could not be determined. The surface of the plates is ornamented with minute tubercular thickenings which taper to sharp points.