original description
(of Natica obtusa Jeffreys, 1885) Jeffreys, J. G. (1885). On the Mollusca procured during the 'Lightning' and 'Porcupine' expeditions, 1868-70 (Part IX). <em>Proceedings of the Zoological Society of London.</em> 1885 : 27-63, pl. 4-6., available online at http://www.biodiversitylibrary.org/page/31015014
page(s): 33-34; pl. 4 fig. 6-6a [details]
original description
(of Neverita pilula Locard, 1897) Locard, A. (1897-1898). Expéditions scientifiques du Travailleur et du Talisman pendant les années 1880, 1881, 1882 et 1883. <em>Mollusques testacés. Paris, Masson.</em> vol. 1 [1897], p. 1-516 pl. 1-22; vol. 2 [1898], p. 1-515, pl. 1-18., available online at https://www.biodiversitylibrary.org/page/10994100
page(s): vol. 1, p. 484-485, pl. 20 fig. 27-30 [details]
context source (MSBIAS)
MEDIN. (2011). UK checklist of marine species derived from the applications Marine Recorder and UNICORN. version 1.0. [details]
context source (Deepsea)
Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS), available online at http://www.iobis.org/ [details]
basis of record
Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. <em>Patrimoines Naturels.</em> 50: 180-213., available online at http://www.vliz.be/imisdocs/publications/ocrd/254404.pdf [details]
From editor or global species database
From other sources