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Thoracosphaera operculata

"Thoracosphaera operculata" Bramlette and Martini, 1964, p.305-306, pl.5, figs.3-7.

TYPE: Holotype: Bramlette and Martini, 1964, pl.5, figs.4-5.

HISTORY: NOW: Pirumella. Originally Thoracosphaera, subsequently Obliquipithonella, thirdly (and now) Pirumella.

SYNONYM(S): Taxonomic junior synonym: Thoracosphaera atlantica, according to Fütterer (1990, p.540).

AGE: Maastrichtian-Paleocene.


Infraspecific taxa:


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