MolluscaBase name details
original description
Fischer, P. (1875–1880). Genres Calcar, Trochus, Xenophora, Tectarius et Risella. In: Kiener, L. C. Spécies général et iconographie des coquilles vivantes.... Paris: J-B. Baillère et fils, Vol. 11. Pp. i–iii, 1–480, pls 1–120 [1–96, 1875; 97–144, 1876; 145–240, 1877; 241–336, 1878; 337–463, 1879–80; Index 464–480]. , available online at https://www.biodiversitylibrary.org/page/2436676 [details]