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Polystephanephorus urnaformis

"Polystephanephorus urnaformis" (Cookson, 1953, p.118, pl.2, figs.41-43) Sarjeant, 1961b, p.1096.

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

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

COMMENTS: Although Sarjeant (1961b, p.1096) did not fully reference the basionym when he proposed this combination, he was clearly using zoological nomenclature, which does not require basionym citations.

AGE: Oligocene.


Infraspecific taxa:


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