Baltisphaeridium dictyophorum Appendix A

"dictyophorum" (Cookson and Eisenack, 1958, p.44, pl.11, fig.14) Downie and Sarjeant, 1965, p.89.  Holotype: Cookson and Eisenack, 1958, pl.11, fig.14; Fensome et al., 1993a, fig.1 — p.1125.  NOW Stiphrosphaeridium.  Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Oligosphaeridium, fourthly (and now) Stiphrosphaeridium.  This combination was not validly published in Downie and Sarjeant (1963, p.91), since these authors did not fully reference the basionym.  Age: Late Jurassic.

Parent: Baltisphaeridium_Appendix A