Tanyosphaeridium prolixispinosum

"prolixispinosum" (Davey and Williams, 1966b, p.76–77, pl.8, figs.2–3) Duxbury, 1980, p.132.  Holotype: Davey and Williams, 1966b, pl.8, fig.3; Fauconnier and Masure, 2004, pl.60, figs.2–4.  NOW Oligosphaeridium.  Originally (and now) Oligosphaeridium, subsequently Tanyosphaeridium.  Age: Cenomanian.

Parent: Tanyosphaeridium