"Baltisphaeridium tuberatum" (Downie, 1958, p.338, pl.17, fig.3; text-fig.3f) Downie and Sarjeant, 1965, p.98.
TYPE: Holotype: Downie, 1958, pl.17, fig.3. HISTORY: NOW: Acanthodiacrodium (Appendix A). Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly (and now) Acanthodiacrodium (Appendix A), fourthly Vulcanisphaera (Appendix A), fifthly Goniosphaeridium (Appendix A). COMMENTS: 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.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |