From Fensome et al., 2019:
Coronifera striolata ?ssp. varians Wetzel, 1933b, p.47–48, pl.4, figs.27–29 ex Sarjeant, 1984c, p.132. Holotype not
specified. Lectotype: Wetzel, 1933b, fig.29; designated by Lentin and Williams (1989, p.78). Originally
Hystrichosphaera hirsuta forma varians (name not validly published), subsequently Baltisphaeridium
hirsutum forma varians (combination not validly published; Appendix A), thirdly Operculodinium
hirsutum subsp. varians (combination not validly published), fourthly (and now) Coronifera striolata?
subsp. varians. Questionable assignment: Sarjeant (1984c, p.132). The name Hystrichosphaera hirsuta
forma varians was not validly published in Wetzel (1933b), since the species name Hystrichosphaera
hirsuta is not validly published. This is possibly a taxonomic synonym of Hystrichosphaera hirsuta forma
varians (name not validly published), which has a different holotype. Age: Late Cretaceous.

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