Paucisphaeridium inversibuccinum forma bipolare

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"forma bipolare" de Coninck, 1986b, p.17, pl.6, figs.31–32,40–41.  Name not validly published: holotype not designated.  NOW Paucisphaeridium inversibuccinum subsp. bipolare.  Originally Paucisphaeridium inversibuccinum forma bipolare (name not validly published), subsequently (and now) Paucisphaeridium inversibuccinum subsp. bipolare. Age: middle Eocene–early Oligocene (Bartonian–Tongrian).

Parent: Paucisphaeridium inversibuccinum