Achomosphaera heterostyla

heterostyla (Heisecke, 1970, p.238,240, pl.5, figs.1-4; pl.6, figs.4-5) Stover and Evitt, 1978, p.138.  Holotype: Heisecke, 1970, pl.5, figs.3-4; pl.6, fig.4.  Originally Hystrichosphaera, subsequently Spiniferites, thirdly (and now) Achomosphaera.  Age: Danian.

Parent: Achomosphaera