Obliquipithonella usheri

"usheri" (Krasheninnikov and Basov, 1983, p.983, pl.7, figs.7–9; pl.8, figs.1–2) Lentin and Williams, 1989, p.400.  Holotype: Krasheninnikov and Basov, 1983, pl.7, fig.7; pl.8, fig.1.  NOW Pirumella.  Originally Pithonella, subsequently Obliquipithonella, thirdly (and now) Pirumella.  Age: Maastrichtian.

Parent: Obliquipithonella