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Hystrichosphaeridium irregulare

"Hystrichosphaeridium irregulare" Pocock, 1962, p.82, pl.15, figs.228-229.

TYPE: Holotype: Pocock, 1962, pl.15, figs.228-229.

HISTORY: Originally Hystrichosphaeridium, subsequently Oligosphaeridium.

SYNONYM(S): 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.


Infraspecific taxa:


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