Cordosphaeridium trompetum
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?trompetum (Cookson and Eisenack, 1982, p.47, pl.4, fig.22) Lentin and Williams, 1985, p.74. Holotype: Cookson and Eisenack, 1982, pl.4, fig.22. Originally Polysphaeridium, subsequently (and now) Cordosphaeridium?. Questionable assignment: Lentin and Williams (1985, p.74). N.I.A. Age: Paleocene.
Parent: Cordosphaeridium