Achomosphaera alcicornu ssp. columnaeformis, (Aristova, 1971, p. 117-118), Lentin and Williams, 1989, p. 3.

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

Holotype: Aristova, 1971, pl.1, fig.2.
Age: Eocene. Parent: Achomosphaera alcicornu