Volkheimeridium irmoechinatum
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"?irmoechinatum" (Heisecke, 1970, p.230, pl.1, fig.3; pl.2, figs.2-3) Quattrocchio and Sarjeant, 2003, p138. Holotype: Heisecke, 1970, pl.1, fig.3; pl.2, figs.2-3. NOW Spinidinium? Originally Deflandrea, subsequently Gonyaulacysta, thirdly (and now) Spinidinium?, fourthly ?Volkheimeridium. Questionable assignment: Quattrocchio and Sarjeant (2003, p.138). Age: Early Paleocene.
Parent: Volkheimeridium