Hystrichosphaeridium mensula
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"mensula" (Wetzel, 1933b, p.49-50, pl.4, fig.32) Downie and Sarjeant, 1965, p.151. Holotype: Wetzel, 1933b, pl.4, fig.32. Name not validly published: name not intended. NOW Veryhachium (Appendix A). Originally Hystrichosphaera (name not validly published), subsequently Hystrichosphaeridium (name not validly published), thirdly (and now) Veryhachium (Appendix A). The name Hystrichosphaera mensula was not validly published in Wetzel (1933b), since the generic name Hystrichosphaera was not validly published until 1937. The name Hystrichosphaeridium mensula was attributed to Deflandre (1937b) by Downie and Sarjeant (1965); however, Deflandre (1937b) did not formally propose or use this name. N.I.A. Age: Late Cretaceous.
Parent: Hystrichosphaeridium