"Exochosphaeridium striolatum subsp. truncatum" (Davey, 1969a, p.164-166, pl.7, figs.1-3) Lentin and Williams, 1973, p.56.
EMENDATIONS: Masure, 1988b, p.129 and Harker and Sarjeant in Harker et al., 1990, p.73-74, both as Pervosphaeridium truncatum. TYPE: Holotype: Davey, 1969a, pl.7, fig.2. HISTORY: NOW: Pervosphaeridium truncatum. Originally Exochosphaeridium striolatum var. truncatum, subsequently Exochosphaeridium striolatum subsp. truncatum, thirdly Exochosphaeridium? truncatum, fourthly (and now) Pervosphaeridium truncatum. AGE: Cenomanian.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |