*Callaiosphaeridium asymmetricum (Deflandre and Courteville, 1939, p.100-101, pl.4, figs.1-2) Davey and Williams, 1966b, p.104.
EMENDATION: Clarke and Verdier, 1967, p.43, as Hexasphaera asymmetrica. TYPE: Holotype: Deflandre and Courteville, 1939, pl.4, fig.1; Fensome et al., 1993a, fig.1 - p.949. HISTORY: Originally Hystrichosphaeridium, subsequently (and now) Callaiosphaeridium, thirdly Hexasphaera (combination illegitimate). AGE: Senonian.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |