"Goniosphaeridium tuberatum" (Downie, 1958, p.338, pl.17, fig.3; text-fig.3f) Welsch, 1986, p.49.
TYPE: Holotype: Downie, 1958, pl.17, fig.3. HISTORY: NOW: Acanthodiacrodium (Appendix A). Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly (and now) Acanthodiacrodium (Appendix A), fourthly Vulcanisphaera (Appendix A), fifthly Goniosphaeridium. AGE: Early Ordovician.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |