Hystrichosphaeridium xipheum

"xipheum" (Maier, 1959, p.309, pl.30, fig.5) Sarjeant, 1964b, p.176.  Holotype: Maier, 1959, pl.30, fig.5.  Originally Galea (generic name illegitimate), subsequently Hystrichosphaeridium, thirdly Hystrichokolpoma?.  Taxonomic senior synonym: Hystrichokolpoma rigaudiae, according to Sarjeant (1983, p.104).  Age: middle Miocene.

Parent: Hystrichosphaeridium