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Dapsilidinium langii

"Dapsilidinium? langii" (Wall, 1965a, p.165, pl.6, figs.9-11; pl.9, fig.9) Lentin and Williams, 1981, p.69.

EMENDATIONS: Morbey, 1975, p.41-42, as Hystrichosphaeridium langii; Below, 1987a, p.70, as Beaumontella langii.

TYPE: Holotype: Wall, 1965a, pl.6, fig.9; pl.9, fig.9; Fensome et al., 1995, figs.1-2 - p.1595.

HISTORY: NOW: Beaumontella. Originally Hystrichosphaeridium, subsequently Polysphaeridium?, thirdly Dapsilidinium?, fourthly (and now) Beaumontella. Questionable assignment: Lentin and Williams (1981, p.69).

AGE: Hettangian-Early Sinemurian.


Infraspecific taxa:


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