Hystrichosphaeridium paradoxum
From dinoflaj2
"paradoxum" Brosius, 1963, p.41-42, pl.4, figs.1,6; text-fig.2, nos.1a-c. Holotype: Brosius, 1963, pl.4, fig.6; Fensome et al., 1995, fig.2 - p.1639. NOW Distatodinium. Originally Hystrichosphaeridium, subsequently Tanyosphaeridium, thirdly Oligosphaeridium?, fourthly (and now) Distatodinium, fifthly Bipolaribucina. Age: Late Oligocene.
Parent: Hystrichosphaeridium
