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Polysphaeridium cephalum

Polysphaeridium cephalum Kar, 1979
Originally Polysphaeridium, subsequently Sumatradinium, thirdly Batiacasphaera?.
Tax. jr. synonym of Operculodinium placitum Drugg and Loeblich Jr., 1967, according to Jain and Garg, 1991.
Holotype: Kar, 1979, pl.4, figs.66a-b
Age: Oligocene

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