Oligosphaeridium patulum

patulum Riding and Thomas, 1988, p.80–82, pl.3, figs.1–3,5–6; text-figs.8a–b,9b.  Holotype: Riding and Thomas, 1988, pl.3, figs.1–2; Fauconnier and Masure, 2004, pl.60, fig.1.  Age: early–late Kimmeridgian.

Parent: Oligosphaeridium