Obliquipithonella williambensonii
From dinoflaj2
"williambensonii" (Bolli, 1978b, p.912-913, pl.2, figs.1-12; pl.3, figs.1-12 ex Keupp, 1981, p.65) Lentin and Williams, 1985, p.383. Holotype: Bolli, 1978b, pl.2, figs.1-3. NOW Pirumella. Originally Bonetocardiella (name not validly published), subsequently Pithonella, thirdly Obliquipithonella, fourthly Orthopithonella, fifthly (and now) Pirumella. Age: Oxfordian-Kimmeridgian.
Parent: Obliquipithonella