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Achomosphaera operculata
From Fensome et al., 2019:
Achomosphaera? operculata, Sah et al., 1970, p.144, pl.1, figs.1–2.
Holotype: Sah et al., 1970, pl.1, fig.1.
NOW Operculodinium.
Originally Achomosphaera, subsequently Achomosphaera?, thirdly (and now) Operculodinium.
Questionable assignment: Stover and Evitt (1978, p.139).
Age: Late Cretaceous.
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Achomosphaera? operculata, Sah et al., 1970, p.144, pl.1, figs.1–2.
Holotype: Sah et al., 1970, pl.1, fig.1.
NOW Operculodinium.
Originally Achomosphaera, subsequently Achomosphaera?, thirdly (and now) Operculodinium.
Questionable assignment: Stover and Evitt (1978, p.139).
Age: Late Cretaceous.
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