Baltisphaeridium veliferum, (Downie, 1958), Downie and Sarjeant, 1965

Now Cymatiogalea (an acritarch genus). Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly (and now) Cymatiogalea (an acritarch genus).

Holotype: Downie, 1958, pl.17, fig.2
Age: Ordovician ( Tremadoc)