Hystrichosphaeridium valgum
From dinoflaj2
"valgum" Tasch in Tasch et al., 1964, p.192-193, pl.2, fig.10. Holotype: Tasch et al., 1964, pl.2, fig.10. Taxonomic senior synonym: Hystrichosphaeridium (now Kiokansium) unituberculatum, according to Stover and Evitt (1978, p.267). Age: Albian.
Parent: Hystrichosphaeridium