Obliquipithonella bilamellata
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"bilamellata" (Pflaumann and Krasheninnikov, 1978, p.822, pl.5, figs.5,6a–d; pl.6, figs.1a–b,2a–b) Lentin and Williams, 1985, p.380. Holotype: Pflaumann and Krasheninnikov, 1978, pl.5, figs.6a–d. NOW Pirumella. Originally Pithonella, subsequently Obliquipithonella, thirdly (and now) Pirumella. Age: Campanian–early Maastrichtian.
Parent: Obliquipithonella