Duosphaeridium nudum
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*nudum (Cookson, 1965a, p.87, pl.10, figs.1-4) Loeblich Jr. and Loeblich III, 1968, p.211. Holotype: Cookson, 1965a, pl.10, fig.1. Originally Diphyes, subsequently (and now) Duosphaeridium. This combination was not validly published by Davey and Williams (1966b, p.97), since these authors did not fully reference the basionym. Age: Late Eocene.
Parent: Duosphaeridium