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Palaeoperidinium hyalodermum

"Palaeoperidinium hyalodermum" Deflandre, 1939b, p.144, pl.6, figs.3-4.

TYPE: Holotype: Deflandre, 1939b, pl.6, figs.3-4; Jan du Chêne et al., 1986a, pl.58, figs.1-5.

STATUS: Name not validly published: generic name not validly published until 1967.

HISTORY: NOW: Impagidinium?. Originally Palaeoperidinium (name not validly published), subsequently Gonyaulacysta, thirdly Gonyaulacysta?, fourthly Rhynchodiniopsis?, fifthly (and now) Impagidinium?.

AGE: Kimmeridgian.


Infraspecific taxa:


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