Xenascus ceratioides
ceratioides (Deflandre, 1937b, p.66-67, pl.12 [al. pl.9], figs.7-8) Lentin and Williams, 1973, p.144. Holotype: Deflandre, 1937b, pl.12 (al. pl.9), figs.7-8; Fensome et al., 1991, fig.1 - p.601; fig.1 - p.605. 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 Endoceratium (as Xenascus) perforatum; Xenascus australensis, according to Davey and Verdier (1971, p.26) - however, Lentin and Williams (1985, p.374) retained Xenascus australensis; Odontochitina blastema, according to Davey and Verdier (1971, p.27) - however, Stover and Helby (1987a, p.128) retained Odontochitina (as Xenascus) blastema. Age: Senonian.
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