Baltisphaeridium pectiniforme, Gerlach, 1961

Now Areosphaeridium?. Originally Baltisphaeridium, subsequently Cleistosphaeridium, thirdly (and now) Areosphaeridium?.

Holotype: Gerlach, 1961, pl.28, fig.14; Sarjeant, 1984, pl.1, fig.2; pl.4, fig.2
Age: Oligocene