Hystrichosphaeridium hirundo
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"hirundo" Eisenack, 1958a, p.404-405, pl.24, fig.12. Emendation: Sarjeant, 1985a, p.76-77, as Achomosphaera hirundo. Holotype: Eisenack, 1958a, pl.24, fig.12. NOW Cordosphaeridium?. Originally Hystrichosphaeridium, subsequently Achomosphaera, thirdly Lanternosphaeridium, fourthly (and now) Cordosphaeridium?, fifthly Spiniferites?. N.I.A. Age: Early Cretaceous.
Parent: Hystrichosphaeridium