Hystrichosphaeridium simplicispinum
From dinoflaj2
"simplicispinum" Davey and Williams, 1966b, p.59-60, pl.9, fig.3. Holotype: Davey and Williams, 1966b, pl.9, fig.3. Originally Hystrichosphaeridium, subsequently Kleithriasphaeridium. Taxonomic senior synonym: Hystrichosphaeridium (now Kleithriasphaeridium) eoinodes, according to Below (1982c, p.17). Age: Barremian.
Parent: Hystrichosphaeridium
