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Achomosphaera alcicornu subsp. columnaeformis

Achomosphaera alcicornu subsp. columnaeformis (Aristova, 1971, p.117-118, pl.1, fig.2) Lentin and Williams, 1989, p.3.

TYPE: Holotype: Aristova, 1971, pl.1, fig.2.

HISTORY: Originally Achomosphaera alcicornu forma columnaeformis, subsequently (and now) Achomosphaera alcicornu subsp. columnaeformis.

AGE: Eocene.


Infraspecific taxa:


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