Hystrichosphaeridium magnarmatum

"magnarmatum" Tasch in Tasch et al., 1964, p.192, pl.1, fig.22.  Holotype: Tasch et al., 1964, pl.1, fig.22.  Taxonomic senior synonym: Hystrichosphaeridium (now Kiokansium) unituberculatum, according to Stover and Evitt (1978, p.267).  Age: Albian.

Parent: Hystrichosphaeridium