(ofBulla obtusa Montagu, 1803)Montagu, G. (1803). Testacea Britannica or natural history of British shells, marine, land, and fresh-water, including the most minute: Systematically arranged and embellished with figures. J. White, London, Vol. 1, xxxvii + 291 pp.; Vol. 2, pp. 293–606, pl. 1-16., available online athttp://www.biodiversitylibrary.org/item/78694 page(s): 223 [details]
MolluscaBase eds. (2025). MolluscaBase. Retusa obtusa (Montagu, 1803). Accessed through: VLIZ Belgian Marine Species Consortium (2010 onwards) Belgian Register of Marine Species at: https://www.marinespecies.org/berms/aphia.php?p=taxdetails&id=141134 on 2025-05-28
VLIZ Belgian Marine Species Consortium (2010 onwards). Belgian Register of Marine Species. Retusa obtusa (Montagu, 1803). Accessed at: https://marinespecies.org/berms/aphia.php?p=taxdetails&id=141134 on 2025-05-28
original description(ofBulla obtusa Montagu, 1803)Montagu, G. (1803). Testacea Britannica or natural history of British shells, marine, land, and fresh-water, including the most minute: Systematically arranged and embellished with figures. J. White, London, Vol. 1, xxxvii + 291 pp.; Vol. 2, pp. 293–606, pl. 1-16., available online athttp://www.biodiversitylibrary.org/item/78694 page(s): 223 [details]
basis of recordGofas, 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. Patrimoines Naturels. 50: 180-213., available online athttp://www.vliz.be/imisdocs/publications/ocrd/254404.pdf[details]
additional sourceAbbott, R. T. (1974). American seashells. The marine Mollusca of the Atlantic and Pacific coast of North America. ed. 2. Van Nostrand, New York. 663 pp., 24 pls. [October 1974]. (look up in IMIS) [details]
additional sourceBerry, A. J. (1994). Foraminiferan prey in the annual life cycle of the predatory opisthobranch gastropod Retusa obtusa (Montagu). Estuarine Coastal and Shelf Science. 38(6): 603-612.[details]
additional sourceCeulemans, L.; Van Dingenen, F.; Landau B. M. (2018). The lower Pliocene gastropods of Le Pigeon Blanc (Loire-Atlantique, northwest France). Part 5 – Neogastropoda (Conoidea) and Heterobranchia (fine). Cainozoic Research. 18(2): 89-176. page(s): 122, pl. 7 fig. 9 [details] Available for editors
additional sourceChaban, E.; Ekimova, I.; Stanovova, M.; Schepetov, D. (2023). Integrative analysis of Retusa pertenuis (Heterobranchia: Cephalaspidea) from Arctic and Russian Far East seas with discussion of Its morphology, validity and population structure. Diversity. 15(9): 974., available online athttps://doi.org/10.3390/d15090974[details] Available for editors
Present 
.jpg "To Malacopics (Retusa obtusa (Montagu, 183) Netherlands, Zeeland, Westerschelde, De Kaloot, collect...")
 turrita.jpg "To Malacopics (Retusa obtusa (Montagu, 183) United Kingdom, Orkney Islands, Mainland, St. Peters Po...")
