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Hystrichosphaeridium asymmetricum

"Hystrichosphaeridium asymmetricum" Deflandre and Courteville, 1939, p.100-101, pl.4, figs.1-2.

EMENDATION: Clarke and Verdier, 1967, p.43, as Hexasphaera asymmetrica (combination illegitimate).

TYPE: Holotype: Deflandre and Courteville, 1939, pl.4, fig.1; Fensome et al., 1993a, fig.1 - p.949.

HISTORY: NOW: Callaiosphaeridium. Originally Hystrichosphaeridium, subsequently (and now) Callaiosphaeridium, thirdly Hexasphaera.

AGE: Senonian.


Infraspecific taxa:


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