Baltisphaeridium insigne, (Fridriksone, 1971), Volkova, 1974

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

Holotype: Fridriksone, 1971, pl.2, fig.10
Age: Early-middle Cambrian