"Exochosphaeridium? cenomaniense" Norvick, 1976, p.52-53, pl.4, figs.4,8.
TYPE: Holotype: Norvick, 1976, pl.4, fig.4. HISTORY: NOW: Pervosphaeridium. Originally Exochosphaeridium, subsequently Exochosphaeridium?, thirdly (and now) Pervosphaeridium. Questionable assignment: Stover and Evitt (1978, p.154). AGE: Cenomanian.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |