Pithonella usheri
From dinoflaj3
"usheri" Krasheninnikov and Basov, 1983, p.983, pl.7, figs.7–9; pl.8, figs.1–2. 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: Pithonella