Achomosphaera alcicornu subsp. columnaeformis
From dinoflaj3
subsp. columnaeformis (Aristova, 1971, p.117–118, pl.1, fig.2) Lentin and Williams, 1989, p.3. Holotype: Aristova, 1971, pl.1, fig.2. Originally Achomosphaera alcicornu forma columnaeformis, subsequently (and now) Achomosphaera alcicornu subsp. columnaeformis. Age: Eocene.
Parent: Achomosphaera alcicornu