Cordosphaeridium tenuistriatum
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?tenuistriatum Heisecke, 1970, p.245, pl.7, fig.1; pl.12, figs.3–4. Emendation: Quattrocchio and Sarjeant, 1996, p.118, as Tityrosphaeridium tenuistriatum. Holotype: Heisecke, 1970, pl.7, fig.1; pl.12, figs.3–4. Originally Cordosphaeridium, subsequently (and now) Cordosphaeridium?, thirdly Tityrosphaeridium?, fourthly Tityrosphaeridium. This species is here retained questionably in Cordosphaeridium since Tityrosphaeridium is now considered a taxonomic junior synonym of Cordosphaeridium. Questionable assignment: Stover and Evitt (1978, p.147). Age: early Paleocene.
Parent: Cordosphaeridium