Rigaudella filamentosa
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filamentosa (Cookson and Eisenack, 1958, p.47–48, pl.7, figs.8–9; pl.8, figs.1–2) Below, 1982b, p.148. Holotype: Cookson and Eisenack, 1958, pl.7, fig.9. Originally Cannosphaeropsis, subsequently Adnatosphaeridium, thirdly (and now) Rigaudella. Taxonomic junior synonym: Cannosphaeropsis (subsequently Rigaudella) perforata, according to Stancliffe and Sarjeant (1990, p.206). Age: Middle-Late Jurassic.
