Perisseiasphaeridium eisenackii
From dinoflaj3
"eisenackii" Davey and Williams, 1969, p.6. Holotype: Eisenack, 1958a, pl.26, fig.1, as Hystrichosphaeridium anthophorum. Taxonomic senior synonym: Hystrichosphaerina schindewolfii, according to Davey and Verdier (1974, p.640). Age: late Aptian.
Parent: Perisseiasphaeridium