Hystrichosphaeridium striatoconum
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"striatoconum" Deflandre and Cookson, 1955, p.275, pl.2, fig.10; text-fig.36. Holotype: Deflandre and Cookson, 1955, text-fig.36. NOW Conosphaeridium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Litosphaeridium?, fourthly (and now) Conosphaeridium. This name was not validly published in Deflandre and Cookson (1954, p.1236), who did not provide a description. Age: mid Senonian.
Parent: Hystrichosphaeridium
