Difference between revisions of "Baltisphaeridium tuberatum Appendix A"

Revision as of 15:14, 2 December 2016

"tuberatum" (Downie, 1958, p.338, pl.17, fig.3; text-fig.3f) Downie and Sarjeant, 1965, p.98.  Holotype: Downie, 1958, pl.17, fig.3.  NOW Acanthodiacrodium (Appendix A).  Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly (and now) Acanthodiacrodium (Appendix A), fourthly Vulcanisphaera (Appendix A), fifthly Goniosphaeridium (Appendix A).  This combination was not validly published in Downie and Sarjeant (1963, p.91), since these authors did not fully reference the basionym.  Hu Yunxu (1986, p.219) also proposed this combination.  Age: Early Ordovician.