Baltisphaeridium zonale Appendix A

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zonale (Timofeev, 1959, p.55, pl.4, fig.19) Downie and Sarjeant, 1965, p.99.  Holotype: Timofeev, 1959, pl.4, fig.19.  Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium.  This combination was not validly published in Downie and Sarjeant (1963, p.91), since these authors did not fully reference the basionym.  Age: Early Ordovician.

Parent: Baltisphaeridium_Appendix A