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Hystrichosphaeridium geometricum

"Hystrichosphaeridium geometricum" Pastiels, 1948, p.41, pl.4, figs.1-11.

TYPE: Holotype: Pastiels, 1948, pl.4, fig.4.

STATUS: Name illegitimate - senior homonym: Hystrichosphaeridium geometricum Deflandre, 1945a. Substitute name: Apectodinium pastielsii (name illegitimate).

HISTORY: NOW: Apectodinium geometricum. Originally Hystrichosphaeridium geometricum (name illegitimate), subsequently Baltisphaeridium geometricum (Appendix A), thirdly Apectodinium pastielsii (name illegitimate), fourthly (and now) Apectodinium geometricum.

SYNONYM(S): Taxonomic junior synonym (at specific rank): Wetzeliella homomorpha var. quinquelata (as Wetzeliella quinquelata, now Apectodinium quinquelatum), by implication in Harland (1979c, p.67), who considered the latter to be the senior name - however, Lentin and Williams (1989, p.18) retained Apectodinium quinquelatum.

AGE: Eocene.


Infraspecific taxa:


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