Ambonosphaera calloviana

*calloviana Fensome, 1979, p.51–54, pl.7, figs.3,5–6,8–9; text-figs.16A–D,17A–B.  Holotype: Fensome, 1979, pl.7, figs.3,6,9; text-figs.16B–C; Fensome et al., 1993a, figs.1–3,7–8 — p.1007.  Originally (and now) Ambonosphaera, subsequently Polygonifera.  Prauss (1989, p.31) retained this species in Ambonosphaera.  Age: early Callovian.

Parent: Ambonosphaera