"Hystrichosphaeridium microtriainum" Klumpp, 1953, p.390, pl.17, figs.6-7.
EMENDATION: Sarjeant, 1981, p.110-112, as Achomosphaera microtriaina. TYPE: Holotype: Klumpp, 1953, pl.17, figs.6-7; Sarjeant, 1981, pl.2, figs.1-2; text-fig.2. HISTORY: NOW: Operculodinium. Originally Hystrichosphaeridium, subsequently Cordosphaeridium, thirdly Cordosphaeridium?, fourthly Polysphaeridium, fifthly Achomosphaera, sixthly (and now) Operculodinium. AGE: Late Eocene.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |