(ofLacuna (Medoriopsis) Cossmann, 1888 †)Cossmann, M. (1888). Catalogue illustré des coquilles fossiles de l'Éocène des environs de Paris. <em>Annales de la Société Royale Malacologique de Belgique.</em> 23: 3-328; pls 1-12. [published 1889; also published as preprint in 1888; see Breure & Backhuys, 2012: 140]., available online athttps://www.biodiversitylibrary.org/page/5609412 page(s): 266 [details]
original description(ofLacuna (Medoriopsis) Cossmann, 1888 †)Cossmann, M. (1888). Catalogue illustré des coquilles fossiles de l'Éocène des environs de Paris. <em>Annales de la Société Royale Malacologique de Belgique.</em> 23: 3-328; pls 1-12. [published 1889; also published as preprint in 1888; see Breure & Backhuys, 2012: 140]., available online athttps://www.biodiversitylibrary.org/page/5609412 page(s): 266 [details]