Hystrichosphaera ceratioides

"ceratioides" Deflandre, 1937b, p.66–67, pl.12 (al. pl.9), figs.7–8.  Holotype: Deflandre, 1937b, pl.12 (al. pl.9), figs.7–8; Fensome et al., 1991, fig.1 — p.601; fig.1 — p.605.  NOW Xenascus.  Originally Hystrichosphaera, subsequently Pseudoceratium, thirdly Spiniferites, fourthly Phoberocysta, fifthly (and now) Xenascus.  Taxonomic junior synonyms: Endoceratium (now Xenascus) perforatum, according to Davey and Verdier (1971, p.27) — however, Yun Hyesu (1981, p.62) retained Xenascus perforatus; Xenascus australiensis, according to Davey and Verdier (1971, p.26) — however, Lentin and Williams (1985, p.374) retained Xenascus australiensis; Odontochitina blastema, according to Davey and Verdier (1971, p.27) — however, Stover and Helby (1987a, p.128) retained Odontochitina (as Xenascus) blastema.  Age: Senonian.

Parent: Hystrichosphaera