Baltisphaeridium intermedium, (O. Wetzel, 1933), Downie and Sarjeant, 1965

Now Hystrichosphaeridium. Originally Hystrichosphaera, subsequently (and now) Hystrichosphaeridium, thirdly Baltisphaeridium. This combination was not validly published in Downie and Sarjeant, 1963 since these authors did not fully reference the basionym. Stover and Evitt, 1978 retained this species in Hystrichosphaeridium Deflandre, 1937.

Holotype: O. Wetzel, 1933, text-fig.14
Age: Late Cretaceous