Obliquipithonella bilamellata

"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