Orthopithonella cookii
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"cookii" (Bolli, 1974, p.856, pl.6, figs.9–12; pl.18, figs.3–9; pl.23, fig.6) Willems, 1988, p.437. Holotype: Bolli, 1974, pl.6, fig.9; pl.23, fig.6. Combination not validly published: basionym not fully referenced. NOW Pirumella. Originally Pithonella, subsequently Obliquipithonella, thirdly Orthopithonella (combination not validly published), fourthly (and now) Pirumella. Age: Coniacian–Santonian.
Parent: Orthopithonella