Baltisphaeridium rjabininii Appendix A

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rjabininii (Timofeev, 1959, p.56, pl.4, fig.24) Downie and Sarjeant, 1965, p.95.  Holotype: Timofeev, 1959, pl.4, fig.24.  Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium.  This combination was not validly published in Downie and Sarjeant (1963, p.90), since these authors did not fully reference the basionym.  Age: Early Ordovician.

Parent: Baltisphaeridium_Appendix A