Cannosphaeropsis urnaformis
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"urnaformis" Cookson, 1953, p.118, pl.2, figs.41–43. Holotype: Cookson, 1953, pl.2, figs.41–42. NOW Emmetrocysta. Originally Cannosphaeropsis, subsequently Polystephanephorus, thirdly (and now) Emmetrocysta. Age: Oligocene.
Parent: Cannosphaeropsis