Higher Classification: > Kingdom Animalia > Phylum Mollusca > Class Gastropoda > Subclass Heterobranchia > Infraclass Opisthobranchia > Order Cephalaspidea > Superfamily Philinoidea > Family Retusidae > Genus Retusa

Retusa obtusa (Montagu, 1803)

Rank: Species
Taxon Status: accepted

Relationships towards this taxon

Genus group names

RetusaT. Brown, 1827accepted genus name
Utriculus T. Brown, 1844 later homonym
Coleophysis P. Fischer, 1883 synonym
Cylichnina Monterosato, 1884 synonym
Retusa (Coleophysis) P. Pischer, 1883 synonym
Retusa (Cylichnina) Monterosato, 1884 synonym
Retusa (Retusa) Brown, 1827 synonym
Utriculus T. Brown, 1844 synonym

Species group names

Bulla obtusa Montagu, 1803 synonym
Bulla pertenuis Mighels, 1843 synonym
Bulla turrita Møller, 1842 synonym
Retusa obtusa var. turrita (Møller, 1842) synonym
Retusa pertenuis (Mighels, 1843) synonym
Utriculus obtusus (Montagu, 1803) synonym
Utriculus obtusus var. semistriata Jeffreys, 1869 synonym


Retusa obtusa var. lajonkaireana (Basterot, 1825)

Vernaculars (+) (-)

 Dutch: oubliehoren; oubliehorentje sources: Adema, J.P.H.M.; de Bruyne, R.H.; Perk, F.A. (1989). Preliminary name list of marine molluscs and shells, regularly washed ashore along the coasts of the Netherlands and Belgium [Voorlopige naamlijst van de mariene mollusken en de regelmatig langs de kust van Nederland en België aangespoelde schelpensoorten]. De Strandvlo 9(2): 49-59;Backeljau, T. (1986). Lijst van de recente mariene mollusken van België [List of the recent marine molluscs of Belgium]. Koninklijk Belgisch Instituut voor Natuurwetenschappen: Brussels, Belgium. 106 pp.
 English: Arctic barrel-bubble sources: North-West Atlantic Ocean species (NWARMS)
 French: bulle arctique


original description

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. and Vol. 2, 293–606 pp.

basis of record

Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180-213

additional source

Abbott 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]

additional source

Berry 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





External Links

Biodiversity Heritage Library (35 publications)
USNM Invertebrate Zoology Mollusca Collection


Gofas, S. (2014). Retusa obtusa (Montagu, 1803). In: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvantidis, C.; Appeltans, W. (2014) European Register of Marine Species, accessed through PESI at http://www.eu-nomen.eu/portal/taxon.php?GUID=urn:lsid:marinespecies.org:taxname:141134




 Present  Absent  Doubtful  Native  Introduced  Naturalised  Invasive  Managed  No data




Red List status DD 2003This species is data deficient, there is inadequate information to make a direct, or indirect, assessment of its risk of extinction based on its distribution and/or population status according to the red list of the International Union for Conservation of Nature and Natural Resources.
annex II, III, IV, V This species is threatened and/or declining in the Greater North Sea, the Celtic Seas, the Bay of Biscay and the Wider Atlantic according to the OSPAR Convention for the Protection of the Marine Environment of the North-East Atlantic.

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Last modified

2004-12-21 by Serge Gofas

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