Cordosphaeridium? spinosum (White, 1842) de Coninck, 1965

Now Exochosphaeridium?.
Combination not validly published since de Coninck, 1965, did not fully reference the basionym.
Originally Xanthidium, subsequently Hystrichosphaeridium, thirdly Baltisphaeridium, fourthly Cordosphaeridium (combination not validly published), fifthly Exochosphaeridium, sixthly (and now) Exochosphaeridium?.
Stover and Evitt, 1978, considered this to be a provisionally accepted species of Exochosphaeridium.
Holotype: White, 1842, pl.4, fig.6
Age: Late Cretaceous