Hystrichosphaeridium vasiformum
From dinoflaj2
"vasiformum" Neale and Sarjeant, 1962, p.452, pl.20, fig.1; text-fig.8b. Holotype: Neale and Sarjeant, 1962, pl.20, fig.1; text-fig.8b; Fauconnier and Masure, 2004, pl.62, fig.4. NOW Oligosphaeridium. Originally Hystrichosphaeridium, subsequently (and now) Oligosphaeridium. 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.
Parent: Hystrichosphaeridium
