"Baltisphaeridium malleoferum" (White, 1842, p.37, pl.4, div.3, fig.7) Downie and Sarjeant, 1965, p.92.
TYPE: Holotype: White, 1842, pl.4, div.3, fig.7; Sarjeant, 1991, fig.4.6. HISTORY: NOW: Achomosphaera?. Originally Xanthidium (Appendix A), subsequently Baltisphaeridium, thirdly (and now) Achomosphaera?, fourthly Hystrichosphaeridium (combination not validly published). COMMENTS: This combination was not validly published in Downie and Sarjeant (1963, p.91), since these authors did not fully reference the basionym. AGE: Late Cretaceous.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |