Baltisphaeridium differtum Appendix A
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differtum (Sannemann, 1955, p.327, pl.4, fig.15; text-figs.5a-c) Downie and Sarjeant, 1965, p.89. Holotype: Sannemann, 1955, pl.4, fig.15. 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: Devonian (Late Givetian).
Parent: Baltisphaeridium
