Apteodinium mecsekense, (Nagy, 1969), Helenes, 1984

Originally Palaeoperidinium, subsequently Gonyaulacysta?, thirdly Millioudodinium?, fourthly (and now) Apteodinium.

Holotype: Nagy, 1969, pl.1, figs.6,8; Jan du Chêne et al., 1986, pl.11, figs.10-12
Age: Late Pannonian (Late Miocene)