Endoceratium perforatum

"perforatum" Vozzhennikova, 1967, p.188–189, pl.112, figs.1a–b,3; pl.113, fig.1.  Emendation: Yun Hyesu, 1981, p.62, as Xenascus perforatus.  Holotype: Vozzhennikova, 1967, pl.112, fig.1a; Lentin and Vozzhennikova, 1990, pl.16, fig.5; text-fig.69.  NOW Xenascus.  Originally Endoceratium, subsequently (and now) Xenascus.  Taxonomic senior synonym: Hystrichosphaera (as Phoberocysta, now Xenascus) ceratioides, according to Davey and Verdier (1971, p.27) — however, Yun Hyesu (1981, p.62) retained Xenascus perforatus.  Lentin and Vozzhennikova (1990, p.118–119) provided an "expanded description" for this species, as Xenascus perforatus.  Age: Late Cretaceous.

Parent: Endoceratium