Baltisphaeridium hirsutum subsp. amplum Appendix A

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"subsp. amplum" (Wetzel, 1955, p.38; text-fig.11) Downie and Sarjeant, 1965, p.91.  Emendation: Sarjeant, 1984c, p.131, as Operculodinium centrocarpum subsp. amplum, Holotype: Wetzel, 1955, text-fig.11; Sarjeant, 1984a, pl.3, figs.1–3; text-fig.4.  Name not validly published: specific name not validly published.  NOW Operculodinium centrocarpum subsp. amplum.  Originally Hystrichosphaeridium hirsutum subsp. amplum (name not validly published), subsequently Baltisphaeridium hirsutum subsp. amplum (name not validly published), thirdly Operculodinium? hirsutum subsp. amplum, fourthly (and now) Operculodinium centrocarpum subsp. amplum.  In proposing this subspecies, Wetzel (1955) misspelled the specific epithet as "hirtum"; see Downie and Sarjeant (1965, p.166).  Age: early Paleocene (Danian).

Parent: Baltisphaeridium hirsutum_Appendix A