Peteinosphaeridium ramusculosum (Deflandre, 1945) Piskun, 1974

Combination not validly published since neither Piskun, 1974 nor Golubtsov, 1978 fully referenced the basionym.
Now Oppilatala (an acritarch genus). Originally Hystrichosphaeridium, subsequently Baltisphaeridium (an acritarch genus), thirdly Multiplicisphaeridium (an acritarch genus), fourthly Peteinosphaeridium (combination not validly published), fifthly (and now) Oppilatala (an acritarch genus); see also Evittia (an acritarch genus; combination not validly published).
Holotype: Deflandre, 1945, pl.1, figs.8-10
Age: Silurian