Oligosphaeridium paradoxum
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"?paradoxum" (Brosius, 1963, p.41-42, pl.4, figs.1,6; text-fig.2, nos.1a-c) Davey and Williams, 1969,p.5. 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. Questionable assignment: Davey and Williams (1969,p.5). Taxonomic junior synonym: Distatodinium craterum, according to Fensome et al. (2009, p.31). Age: Late Oligocene.
Parent: Oligosphaeridium