Oligosphaeridium albertense
albertense (Pocock, 1962, p.82, pl.15, figs.226–227) Davey and Williams, 1969, p.5. Holotype: Pocock, 1962, pl.15, fig.226; Brideaux, 1977, pl.11, figs.3–4; Jansonius, 1986, pl.4, figs.4–5; Fauconnier and Masure, 2004, pl.55, figs.1–6. Originally Hystrichosphaeridium, subsequently (and now) Oligosphaeridium. Taxonomic junior synonyms: Hystrichosphaeridium (as Oligosphaeridium) irregulare, according to Jansonius (1986, p.213); Hystrichosphaeridium (as Oligosphaeridium?) coelenteratum, Hystrichosphaeridium (as Oligosphaeridium?) dispare and Hystrichosphaeridium (as Oligosphaeridium) reniforme, by implication in Stover and Evitt (1978, p.68–69), who considered these species to be taxonomic junior synonyms of Hystrichosphaeridium (as Oligosphaeridium) irregulare, which is now a taxonomic junior synonym of Hystrichosphaeridium (now Oligosphaeridium) albertense. This combination was not validly published in Davey and Williams (1966b, p.77), since these authors did not fully reference the basionym. Age: Barremian.
