"Polysphaeridium? 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. TYPE: Holotype: Wall, 1965a, pl.6, fig.9; pl.9, fig.9; Fensome et al., 1995, figs.1-2 - p.1595. HISTORY: NOW: Beaumontella. Originally Hystrichosphaeridium, subsequently Polysphaeridium?, thirdly Dapsilidinium?, fourthly (and now) Beaumontella. Questionable assignment: Riley and Sarjeant (1972, p.3). AGE: Hettangian-Early Sinemurian.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |