Baltisphaeridium echinoides Appendix A
From dinoflaj2
"echinoides" (Maier, 1959, p.318-319, pl.32, figs.5-6) Downie and Sarjeant, 1965, p.90. Holotype: Maier, 1959, pl.32, fig.6. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Cleistosphaeridium. Taxonomic senior synonym: Xanthidium (now Spiniferites) ramosum, according to Sarjeant (1983, p.91-92). This combination was not validly published in Downie and Sarjeant (1963, p.90), since these authors did not fully reference the basionym. Age: mid Oligocene-Mid Miocene.
Parent: Baltisphaeridium
