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