Baltisphaeridium divergens Appendix A

"divergens" (Eisenack, 1954b, p.67, pl.9, figs.13-16) Downie and Sarjeant, 1963, p.91.  Holotype: Eisenack, 1954b, pl.9, fig.14.  Combination not validly published: basionym not fully referenced.  NOW Operculodinium.  Originally Hystrichosphaeridium, subsequently Baltisphaeridium (combination not validly published), thirdly Cordosphaeridium, fourthly (and now) Operculodinium.  Age: Early Oligocene.

Parent: Baltisphaeridium