Hystrichosphaeridium perovatum

"perovatum" Tasch in Tasch et al., 1964, p.194, pl.3, fig.13.  Holotype: Tasch et al., 1964, pl.3, fig.13.  Originally Hystrichosphaeridium, subsequently Polysphaeridium?.  Taxonomic senior synonym: Hystrichosphaeridium (now Kiokansium) unituberculatum, according to Stover and Evitt (1978, p.267).  Age: Albian.

Parent: Hystrichosphaeridium