"Hystrichosphaeridium vasiformum" Neale and Sarjeant, 1962, p.452, pl.20, fig.1; text-fig.8b.
TYPE: Holotype: Neale and Sarjeant, 1962, pl.20, fig.1; text-fig.8b. HISTORY: NOW: Oligosphaeridium. Originally Hystrichosphaeridium, subsequently (and now) Oligosphaeridium. SYNONYM(S): Taxonomic senior synonym: Hystrichosphaeridium (as Oligosphaeridium?) asterigerum, according to Duxbury (1977, p.45) - however, McIntyre and Brideaux (1980, p.21) retained Hystrichosphaeridium (as Oligosphaeridium) vasiforme. Taxonomic junior synonym: Hystrichosphaeridium (as Oligosphaeridium) macrotubulum, according to McIntyre and Brideaux (1980, p.21). AGE: mid Hauterivian-Early Eocene.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |