Pirumella operculata
From dinoflaj3
"operculata" (Bramlette and Martini, 1964, p.305–306, pl.5, figs.3–7) Williams et al., 1998, p.490. Emendation: Streng et al., 2004, p.467, as Cervisiella operculata. Holotype: Bramlette and Martini, 1964, pl.5, figs.4–5. NOW Cervisiella. Originally Thoracosphaera, subsequently Obliquipithonella, thirdly Pirumella, fourthly Operculodinella, fifthly (and now) Cervisiella. Taxonomic junior synonym: Thoracosphaera atlantica, according to Fütterer (1990, p.540). Age: Maastrichtian–Paleocene.
Parent: Pirumella