Difference between revisions of "Baltisphaeridium erraticum Appendix A"

Revision as of 15:13, 2 December 2016

"erraticum" (Eisenack, 1954a, p.209, pl.1, figs.6-7; text-fig.7) Downie and Sarjeant, 1965, p.90.  Holotype: Eisenack, 1954a, pl.1, fig.6.  NOW Visbysphaera (Appendix A).  Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly (and now) Visbysphaera (Appendix A), fourthly Multiplicisphaeridium (Appendix A).  This combination was not validly published in Downie and Sarjeant (1963, p.90) and Cramer (1964, p.294), since these authors did not fully reference the basionym.  Age: Silurian (Late Ludlow).