Polysphaeridium pseudocolligerum
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"pseudocolligerum" Stover, 1977, p.74–75, pl.1, figs.14–19. Holotype: Stover, 1977, pl.1, figs.14–16. NOW Dapsilidinium. Originally Polysphaeridium, subsequently (and now) Dapsilidinium. Taxonomic senior synoym: Polysphaeridium (now Dapsilidinium) pastielsii according to Mertens et al. (2014, p.532) — however, Fensome et al., in press, retained Dapsilidinium pseudocolligerum as a separate species. Age: early Oligocene–early Miocene.
Parent: Polysphaeridium