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Pervosphaeridium truncatum

Pervosphaeridium truncatum (Davey, 1969a, p.164-166, pl.7, figs.1-3) Below, 1982c, p.27.

EMENDATIONS: Masure, 1988b, p.129; Harker and Sarjeant in Harker et al., 1990, p.73-74, both as Pervosphaeridium truncatum.

TYPE: Holotype: Davey, 1969a, pl.7, fig.2.

HISTORY: Originally Exochosphaeridium striolatum var. truncatum, subsequently Exochosphaeridium striolatum subsp. truncatum, thirdly Exochosphaeridium? truncatum, fourthly (and now) Pervosphaeridium truncatum.

AGE: Cenomanian.


Infraspecific taxa:


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