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Palaeotetradinium hyalodermum

"Palaeotetradinium hyalodermum" Cookson, 1956, p.188-189, pl.1, figs.12-16.

TYPE: Holotype: Cookson, 1956, pl.1, figs.12-13.

HISTORY: NOW: Dorsennidium (Appendix A). Originally Palaeotetradinium, subsequently Veryhachium (Appendix A), thirdly Goniosphaeridium (Appendix A), fourthly (and now) Dorsennidium (Appendix A).

AGE: Albian-Cenomanian.


Infraspecific taxa:


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