Williams, Lentin and Fensome 1998 - Lentin and Williams Index of Fossil Dinoflagellates

Achomosphaera alcicornu forma columnaeformis, Aristova, 1971, p. 117-118

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

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