Pithonella williambensonii
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"williambensonii" (Bolli, 1978b, p.912-913, pl.2, figs.1-12; pl.3, figs.1-12) Keupp, 1981, p.65. Holotype: Bolli, 1978b, pl.2, figs.1-3. NOW Pirumella. Originally Bonetocardiella, subsequently Pithonella, thirdly Obliquipithonella, fourthly Orthopithonella, fifthly (and now) Pirumella. Age: Oxfordian-Kimmeridgian.
Parent: Pithonella