Hystrichosphaeridium conispiniferum
From dinoflaj3
conispiniferum Yun Hyesu, 1981, p.30–31, pl.2, figs.4–6,9. Holotype: Yun Hyesu, 1981, pl.2, fig.4; Fensome et al., 1991, fig.1 — p.625. Age: early Santonian.
Parent: Hystrichosphaeridium