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Pyramidium alatum

"*Pyramidium 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.

TYPE: Holotype: Cookson and Eisenack, 1962b, pl.2, fig.1; Fensome et al., 1993a, fig.1 - p.893.

HISTORY: NOW: Xiphophoridium. Originally Hystrichodinium, subsequently (and now) Xiphophoridium, thirdly Pyramidium, fourthly Oodnadattia.

AGE: Albian-Cenomanian.


Infraspecific taxa:


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