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Batiacasphaera cephalum
Batiacasphaera? cephala, (Kar, 1979), Lentin and Williams, 1981
Originally Polysphaeridium, subsequently Sumatradinium, thirdly Batiacasphaera?.
Tax. jr. synonym of Operculodinium placitum Drugg and Loeblich Jr., 1967, according to Jain and Garg, 1991. At the time of the transfer, Lentin and Williams, 1981, questionably included this species in Batiacasphaera. Jain, 1980, transferred the species to Sumatradinium Lentin and Williams, 1976. Lentin and Williams, 1985, questionably retained it in Batiacasphaera.
Holotype: Kar, 1979, pl.4, figs.66a-b
Age: Oligocene
Originally Polysphaeridium, subsequently Sumatradinium, thirdly Batiacasphaera?.
Tax. jr. synonym of Operculodinium placitum Drugg and Loeblich Jr., 1967, according to Jain and Garg, 1991. At the time of the transfer, Lentin and Williams, 1981, questionably included this species in Batiacasphaera. Jain, 1980, transferred the species to Sumatradinium Lentin and Williams, 1976. Lentin and Williams, 1985, questionably retained it in Batiacasphaera.
Holotype: Kar, 1979, pl.4, figs.66a-b
Age: Oligocene