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Impletosphaeridium primordiale

"Impletosphaeridium? primordiale" W. Wetzel, 1967b, p.41-42, pl.3, fig.18.

TYPE: Holotype: W. Wetzel, 1967b, pl.3, fig.18.

HISTORY: Questionable assignment: W. Wetzel (1967b, p.41).

SYNONYM(S): Taxonomic senior synonym: Hystrichosphaeridium (now Polygonium) polygonale, according to Eisenack et al. (1973, p.497-498).

AGE: Ordovician.


Infraspecific taxa:


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