Polysphaeridium langii
From dinoflaj2
"?langii" (Wall, 1965a, p.165, pl.6, figs.9-11; pl.9, fig.9) Riley and Sarjeant, 1972, p.3. Emendations: Morbey, 1975, p.41-42, as Hystrichosphaeridium langii; Below, 1987a, p.70-71, as Beaumontella langii. Holotype: Wall, 1965a, pl.6, fig.9; pl.9, fig.9; Fensome et al., 1995, figs.1-2 - p.1595. NOW Beaumontella. Originally Hystrichosphaeridium, subsequently Polysphaeridium?, thirdly Dapsilidinium?, fourthly (and now) Beaumontella. Questionable assignment: Riley and Sarjeant (1972, p.3). Age: Hettangian-Early Sinemurian.
Parent: Polysphaeridium
