Nematosphaeropsis rigida
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rigida Wrenn, 1988, p.144,146,148, pl.2, figs.1-6; pl.3, fig.4; pl.4, figs.1-5; pl.6, figs.3-4. Holotype: Wrenn, 1988, pl.2, figs. 1-6. Head and Westphal (1999, p.12) considered this species to be a questionable taxonomic junior synonym of Nematosphaeropsis balcombiana. Age: Miocene-Holocene.
Parent: Nematosphaeropsis