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Cannosphaeropsis urnaformis

"Cannosphaeropsis urnaformis" Cookson, 1953, p.118, pl.2, figs.41-43.

TYPE: Holotype: Cookson, 1953, pl.2, figs.41-42.

HISTORY: NOW: Emmetrocysta. Originally Cannosphaeropsis, subsequently Polystephanephorus, thirdly (and now) Emmetrocysta.

AGE: Oligocene.


Infraspecific taxa:


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DINOFLAJ (c) 1998