Hystrichosphaeridium trifurcatum ssp. trifurcatum

Autonym.
Now Peteinosphaeridium trifurcatum ssp. trifurcatum. Originally Hystrichosphaeridium trifurcatum ssp. trifurcatum, subsequently Baltisphaeridium trifurcatum ssp. trifurcatum, thirdly (and now) Peteinosphaeridium trifurcatum ssp. trifurcatum.

Holotype: Eisenack 1931, pl.4, fig.21 (as Ovum hispidum ssp. trifurcatum); Eisenack, 1938, pl.2, fig.2 (lost, according to Eisenack, 1959)
Neotype: Eisenack, 1959, pl.17, fig.3 (designated by Eisenack, 1959)
Age: Ordovician (based on material from an erratic)