Pirumella williambensonii
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williambensonii (Bolli, 1978b, p.912–913, pl.2, figs.1–12; pl.3, figs.1–12) Williams et al., 1998, p.492–493. Holotype: Bolli, 1978b, pl.2, figs.1–3. Originally Bonetocardiella, subsequently Pithonella, thirdly Obliquipithonella, fourthly Orthopithonella, fifthly (and now) Pirumella. Age: Oxfordian–Kimmeridgian.
Parent: Pirumella