Hystrichosphaeridium israelianum

"israelianum" Rossignol, 1962, p.132, pl.2, fig.3.  Holotype: Rossignol, 1962, pl.2, fig.3.  NOW Operculodinium.  Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium? (combination not validly published), fourthly (and now) Operculodinium.  Taxonomic junior synonyms: Cleistosphaeridium cephalum, according to Jain and Garg (1991, p.78) and Operculodinium crassum, according to Harland in Head and Wrenn (1992, p.20) - however, Head (1996b, p.1231) provisionally retained Operculodinium crassum.  Motile equivalent: questionably Peridinium (now Protoceratium) reticulatum Claparède and Lachmann, 1859, according to Wall and Dale (1968c, p.272).  Age: Pleistocene.

Parent: Hystrichosphaeridium