Cyrtospirifer verneuili, also called Spirifer verneuili, is an extinct species of brachiopod. The fossils are present in the Upper Devonian.[1]
In Cornwall they have the vernacular name Delabole butterfly, from the appearance of flattened forms in the slates at Delabole.[2]
References
- ^ uBio, ed. (2013). "Cyrtospirifer verneuili".
- ^ Barton, R. M. (1964). "III - The Killas of North and East Cornwall". An Introduction to the Geology of Cornwall. Truro: D. Bradford Barton Ltd. pp. 90–91.