Areosphaeridium calicigerum

calicigerum de Coninck, 1986b, p.10, pl.1, figs.8–13.  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.  Originally Areosphaeridium?, subsequently Surculosphaeridium?, thirdly (and now) Areosphaeridium.  Questionable assignment: de Coninck (1986b, p.10) — however, Michoux and Masure in Fauconnier and Masure (2004, p.63) retained this species in Areosphaeridium without question (but did not acknowledge the earlier transfer to Surculosphaeridium).  Age: late Eocene (Tongrian).

Parent: Areosphaeridium