Xenascus blastema
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blastema (Davey, 1970, p.356, pl.5, figs.4–5) Stover and Helby, 1987a, p.128. Holotype: Davey, 1970, pl.5, fig.4. Originally Odontochitina, subsequently (and now) Xenascus. Taxonomic senior synonym: Hystrichosphaera (as Phoberocysta, now Xenascus) ceratioides, according to Davey and Verdier (1971, p.27) — however, Stover and Helby (1987a, p.128) retained Xenascus blastema. N.I.A.. Age: Cenomanian.
Parent: Xenascus