Baltisphaeridium asteroideum Appendix A

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asteroideum (Maslov, 1956, p.262, pl.86, fig.13) Downie and Sarjeant, 1965, p.87.  Holotype: Maslov, 1956, pl.86, fig.13.  Originally Hystrichosphaera, subsequently Hystrichosphaeridium, thirdly (and now) Baltisphaeridium.  This combination was not validly published in Downie and Sarjeant (1963, p.87), since these authors did not fully reference the basionym.  Age: Late Cretaceous.

Parent: Baltisphaeridium_Appendix A