Taxon according:
Sacchetti, C., Landau, B., & Ávila, S. P. (2023). The Lower Pliocene marine gastropods of Santa Maria Island, Azores: Taxonomy and palaeobiogeographic implications. 1–150. Zootaxa. 5295. 1. https://doi.org/10.11646/zootaxa.5295.1.1.

First publication by:
da Costa, E. M. (1778). Historia naturalis testaceorum Britanniæ, or, the British conchology; containing the descriptions and other particulars of natural history of the shells of Great Britain and Ireland: illustrated with figures. In English and French. Historia naturalis testaceorum Britanniæ, ou, la conchologie Britannique; contenant les descriptions & autres particularités d'histoire naturelle des coquilles de la Grande Bretagne & de l'Irlande: avec figures en taille douce. En anglois & françois. Millan, White, Emsley & Robson, London. https://doi.org/10.5962/bhl.title.13179.