Pithonella cookii
From dinoflaj3
"cookii" Bolli, 1974, p.856, pl.6, figs.9–12; pl.18, figs.3–9; pl.23, fig.6. Holotype: Bolli, 1974, pl.6, fig.9; pl.23, fig.6. NOW Pirumella. Originally Pithonella, subsequently Obliquipithonella, thirdly Orthopithonella (combination not validly published), fourthly (and now) Pirumella. Age: Coniacian–Santonian.
Parent: Pithonella