Phthanoperidinium amoenum
From dinoflaj2
*amoenum Drugg and Loeblich Jr., 1967, p.182, pl.1, figs.1,2a-b,3a-b,4-5; text-fig.1. Holotype: Drugg and Loeblich Jr., 1967, pl.1, fig.4. Age: Oligocene.
Parent: Phthanoperidinium