Hystrichosphaeridium toryna
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"toryna" Cookson and Eisenack, 1960b, p.252, pl.38, figs.6,15. Holotype: Cookson and Eisenack, 1960b, pl.38, fig.15. NOW Egmontodinium. Originally Hystrichosphaeridium, subsequently Prolixosphaeridium?, thirdly Tanyosphaeridium, fourthly (and now) Egmontodinium. N.I.A. Age: Tithonian–Neocomian.
Parent: Hystrichosphaeridium