original description
(of Bulla nucleola Reeve, 1855) Reeve, L. A. (1855). Account of the shells collected by Captain Sir Edward Belcher, C.B., North of Beechey Island, pp. 392–399, pls. 32–33, In: E. Belcher, <i>The last of the Arctic voyages: being a narrative of the expedition in H.M.S. Assistance, under the command of Captain Sir Edward Belcher, C.B., in search of Sir John Franklin, during the years 1852–53–54: with notes on the natural history.</i> Lovell Reeve, London. 2 volumes. , available online at https://www.biodiversitylibrary.org/page/1360228 [details]
original description
(of Bulla corticata Møller, 1842) Möller, H. P. C. (1842). Index Molluscorum Groenlandiae. <em>Naturhistorisk Tidsskrift.</em> 4: 76-97 [Copenhagen]., available online at https://www.biodiversitylibrary.org/page/2322910
page(s): 79 [details]
basis of record
Valdés A. (2019). Northeast Pacific benthic shelled sea slugs. <em>Zoosymposia.</em> 13: 242-304., available online at http://dx.doi.org/10.11646/zoosymposia.13.1.21
page(s): 263, figs 10I-L, 11A [details]
From editor or global species database
Distribution North Atlantic and Arctic Ocean; North Pacific from the Bearing Sea to the Gulf of Alaska; intertidal to 455 m. [details]