Hystrichosphaeridium trispiculare
From dinoflaj2
trispiculare Jagielska, 1962a, p.62, pl.5, fig.5. Holotype: Jagielska, 1962a, pl.5, fig.5. This is probably an acritarch species. Age: Ordovician (Arenig-Caradoc).
Parent: Hystrichosphaeridium
