Adnatosphaeridium robustum
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robustum (Morgenroth, 1966a, p.19, pl.4, fig.1) de Coninck, 1975, p.47–48. Holotype: Morgenroth, 1966a, pl.4, fig.1. Originally Cannosphaeropsis, subsequently (and now) Adnatosphaeridium. Eaton (1976, p.239) also proposed this combination. Age: early Eocene.
Parent: Adnatosphaeridium