Goniosphaeridium oligospinosum (Eisenack, 1934 ex Eisenack, 1938) Eisenack, 1969
Acritarch genus

Now Estriastra? oligospinosa (an acritarch species). Originally Hystrichosphaeridium oligospinosum, subsequently Pulvinosphaeridium oligospinosum (an acritarch species), thirdly Veryhachium oligospinosum (an acritarch species), fourthly Goniosphaeridium oligospinosum, fifthly (and
now) Estiastra? oligospinosa (an acritarch species); see also Ovum hispidum ssp. oligospinosum (name not validly published).
Holotype: Eisenack, 1934, pl.4, fig.18- lost, according to Eisenack et al., 1973
Age: Silurian (based on material from an erratic)