Pervosphaeridium brevispinum (Norvick, 1976, p.53, pl.4, figs.5-6) Below, 1982c, p.27.
TYPE: Holotype: Norvick, 1976, pl.4, figs.5-6. HISTORY: Originally Exochosphaeridium, subsequently Exochosphaeridium?, thirdly (and now) Pervosphaeridium. AGE: Cenomanian.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |