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Cordosphaeridium microtriainum ssp. nanum
Cordosphaeridium microtriainum ssp. nanum (Rozen, 1965) Lenhn and Williams, 1973
Now Cleistosphaeridium? nanum. Originally Cordosphaeridium microtriainum var. nanum, subsequently Cordosphaeridium microtriainum ssp. nanum, thirdly (and now) Cleistosphaeridium? nanum.
Holotype: Rozen, 1965, pl.2, figs.7-8
Age: Late Eocene
Now Cleistosphaeridium? nanum. Originally Cordosphaeridium microtriainum var. nanum, subsequently Cordosphaeridium microtriainum ssp. nanum, thirdly (and now) Cleistosphaeridium? nanum.
Holotype: Rozen, 1965, pl.2, figs.7-8
Age: Late Eocene