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Hystrichosphaeridium macrotubulum

"Hystrichosphaeridium macrotubulum" Neale and Sarjeant, 1962, p.452-455, pl.20, fig.7; text-fig.8a.

TYPE: Holotype: Neale and Sarjeant, 1962, pl.20, fig.7; text-fig.8a.

HISTORY: Originally Hystrichosphaeridium, subsequently Oligosphaeridium, thirdly Oligosphaeridium?.

SYNONYM(S): Taxonomic senior synonym: Hystrichosphaeridium (now Oligosphaeridium) vasiformum, according to McIntyre and Brideaux (1980, p.21).

AGE: Hauterivian.


Infraspecific taxa:


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