Impletosphaeridium sarmentum

"sarmentum" (Stancliffe, 1991, p.187–188, pl.1, figs.1–2; pl.2, fig.6; text-figs.5A–B) Williams et al., 1998, p.335.  Holotype: Stancliffe, 1991, pl.1, figs.1–2; text-figs.5A–B.  NOW Downiesphaeridium.  Originally Cleistosphaeridium, subsequently Impletosphaeridium, thirdly (and now) Downiesphaeridium.  N.I.A.  Age: late Oxfordian.

Parent: Impletosphaeridium