Surculosphaeridium calicigerum
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"?calicigerum" (de Coninck, 1986b, p.10, pl.1, figs.8-13) Stover and Williams, 1995, p.102. Emendation: Michoux and Masure in Fauconnier and Masure, 2004, p.63. Holotype: de Coninck, 1986b, pl.1, figs.11-13; Fauconnier and Masure, 2004, pl.7, figs.1-3. NOW Areosphaeridium. Originally Areosphaeridium?, subsequently Surculosphaeridium?, thirdly (and now) Areosphaeridium. Questionable assignment: Stover and Williams (1995, p.102). Age: Late Eocene (Tongrian).
Parent: Surculosphaeridium
