Hystrichosphaeridium irregulare Pocock 1962

"irregulare" Pocock, 1962, p.82, pl.15, figs.228–229.  Holotype: Pocock, 1962, pl.15, figs.228–229, lost according to Jansonius (1986, p.220).  Lectotype: Jansonius, 1986, pl.4, fig.3, designated by Jansonius (1986, p.214 — caption to pl.4); Fauconnier and Masure, 2004, pl.55, fig.9.  Originally Hystrichosphaeridium, subsequently Oligosphaeridium.  Taxonomic senior synonym: Hystrichosphaeridium (now Oligosphaeridium) albertense, according to Jansonius (1986, p.213).  Taxonomic junior synonyms: Hystrichosphaeridium (as Oligosphaeridium?) coelenteratum, Hystrichosphaeridium (as Oligosphaeridium?) dispare, and Hystrichosphaeridium (as Oligosphaeridium) reniforme, all according to Stover and Evitt (1978, p.69).  Junior homonym: Hystrichosphaeridium irregulare (Merrill, 1895) Sarjeant, 1964b.  Age: late Barremian–Aptian.

Parent: Hystrichosphaeridium