Baltisphaeridium oligacanthum ssp. stella, (W. Wetzel, 1952), Downie and Sarjeant, 1965

Now Surculosphaeridium phoenix ssp. stella. Originally Hystrichosphaeridium oligacanthum ssp. stella, subsequently Baltisphaeridium oligacanthum ssp. stella, thirdly Cleistosphaeridium? oligacanthum ssp. stella, fourthly (and now)
Surculosphaeridium phoenix ssp. stella.

Holotype: W. Wetzel, 1952, pl.A, fig.4
Age: Paleocene