Cannosphaeropsis utinensis ssp. filifera, Cookson and Eisenack, 1958

Now Adnatosphaeridium filiferum. Originally Cannosphaeropsis utinensis ssp. filifera, subsequently Cannosphaeropsis filifera, thirdly (and now) Adnatosphaeridium filiferum.

Holotype: Cookson and Eisenack, 1958, pl.7, fig.4
Age: Turonian-Early Maastrichtian