Paucisphaeridium inversibuccinum subsp. bipolare

subsp. bipolare de Coninck, 1986b, p.17, pl.6, figs.31–32,40–41 ex Masure and Courtinat in Fauconnier and Masure, 2004, p.437.  Holotype: de Coninck, 1986b, pl.6, figs.31–32, designated by Masure and Courtinat in Fauconnier and Masure (2004, p.437); Fauconnier and Masure, 2004, pl.63, figs.2–7.  Originally Paucisphaeridium inversibuccinum forma bipolare (name not validly published), subsequently (and now) Paucisphaeridium inversibuccinum subsp. bipolare.  The name Paucisphaeridium inversibuccinum forma bipolare was not validly published in de Coninck (1986b) since no holotype was designated.  Age: middle Eocene–early Oligocene (Bartonian–Tongrian).

Parent: Paucisphaeridium inversibuccinum