Batiacasphaera explanata
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explanata (Bujak in Bujak et al., 1980, p.44, pl.13, figs.13–14) Islam, 1983a, p.235. Holotype: Bujak et al., 1980, pl.13, figs.13–14. Originally Chytroeisphaeridia, subsequently (and now) Batiacasphaera. Matsuoka (1984a, p.376) also proposed this combination. Age: middle Eocene (see Aubry, 1986).
Parent: Batiacasphaera