Baltisphaeridium intermedium Appendix A

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"intermedium" (Wetzel, 1933b, p.46; text-fig.14 ex Deflandre, 1937b, p.77) Downie and Sarjeant, 1965, p.91.  Holotype: Wetzel, 1933b, text-fig.14.  NOW Hystrichosphaeridium?.  Originally Hystrichosphaera (name not validly published), subsequently Hystrichosphaeridium, thirdly Baltisphaeridium, fourthly (and now) Hystrichosphaeridium?.  This combination was not validly published in Downie and Sarjeant (1963, p.91), since these authors did not fully reference the basionym.  Age: Late Cretaceous.

Parent: Baltisphaeridium_Appendix A