Hystrichosphaeropsis nuda

"nuda" (Wetzel, 1961, p.340, pl.2, fig.2) Sarjeant, 1985b, p.140.  Holotype: Wetzel, 1961, pl.2, fig.2.  Originally Triblastula, subsequently Hystrichosphaeropsis.  Taxonomic senior synonym: Triblastula (as Hystrichosphaeropsis) quasicribrata, according to Marheinecke (1992, p.44).  Age: ?Late Cretaceous (erratic).

Parent: Hystrichosphaeropsis