Palaeostomocystis sphaerica Deflandre, 1937

This specific name was a nomen nudum in Deflandre, 1935 and 1936. Stover and Evitt, 1978 considered this species to be an acritarch.
Holotype: Deflandre, 1937, pl.12 [al. pl.9], fig.6
Age: Cretaceous