Cannosphaeropsis perforata Alberti, 1961

Originally Cannosphaeropsis, subsequently Adnatosphaeridium, thirdly Rigaudella.
Tax. jr. synonym of Cannosphaeropsis (now Rigaudella) filamentosa Cookson and Eisenack, 1958, according to Stancliffe and Sarjeant, 1990.

Holotype: Alberti, 1961, pl.9, fig.14
Age: ?Callovian