Paucisphaeridium inversibuccinum

*inversibuccinum (Davey and Williams, 1966b, p.82, pl.12, fig.3) Bujak et al., 1980, p.32.  Emendation: Bujak et al., 1980, p.32, as Paucisphaeridium inversibuccinum.  Holotype: Davey and Williams, 1966b, pl.12, fig.3; Eisenack and Kjellström, 1972, p.781; Bujak et al., 1980, pl.2, figs.4–5; Fensome et al., 1995, fig.1 — p.1567; Fauconnier and Masure, 2004, pl.63, fig.1.  Originally Litosphaeridium?, subsequently (and now) Paucisphaeridium.  Age: early Eocene.

Parent: Paucisphaeridium

Infrataxon List:

"Paucisphaeridium inversibuccinum forma bipolare"
Paucisphaeridium inversibuccinum subsp. bipolare
Paucisphaeridium inversibuccinum subsp. inversibuccinum