Emarginula is a genus of small keyhole limpets, marine gastropod molluscs in the family Fissurellidae.Bouchet, P.; Gofas, S.; Rosenberg, G. (2012). Emarginula Lamarck, 1801. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138012 on 2013-01-13
Description The oval shell is obliquely conical with a backward-pointing recurved apex. There is a deep incision in the anterior margin. A distinct anal fasciole extends upwards from this incision. The surface is latticed, sculptured with radial ribs. There is no septum inside.
Radula The radula has a dental formula of [many].1.4.1.4.1.[many], with a wide, rectangular, acuspate rachidian tooth. The various genera have a few dozen rows of teeth.
Species According to the World Register of Marine Species (WoRMS), species within the genus Emarginula include:
Emarginula adamsiana Sowerby II in Adams & Sowerby II, 1863 Emarginula adriatica Costa O.G., 1829 Emarginula agulhasensis Thiele, 1925 Emarginula alba Watson, 1897 Emarginula amyda Shikama, 1962 Emarginula angusta McLean, 1970 Emarginula annielangleitae Poppe & Tagaro, 2020 Emarginula apolonia Pacaud, 2015 † Emarginula auversiensis Deshayes, 1861 Emarginula bajula Hedley, 1913 Emarginula balicasagensis Poppe & Tagaro, 2020 Emarginula bellula A. Adams, 1852 Emarginula bicancellata Montrouzier, 1860 Emarginula bonfittoi Smriglio & Mariottini, 2001 Emarginula boucheti Poppe & Tagaro, 2020 † Emarginula brebioni Ceulemans, Van Dingenen & Landau, 2016 Emarginula camilla Melvill & Standen, 1903 Emarginula candida Adams, 1852 Emarginula capuloidea G. Nevill & H. Nevill, 1869 † Emarginula carezi de Laubrière, 1881 Emarginula choristes Dall, 1925 Emarginula christiaensi Piani, 1985 Emarginula circumalbum Poppe & Tagaro, 2020 † Emarginula clathrata Deshayes, 1824 † Emarginula clathrataeformis Eichwald, 1830 Emarginula colipanoae Poppe & Tagaro, 2020 Emarginula compta Habe, 1953 Emarginula concinna Adams, 1852 Emarginula connectens Thiele, 1915 Emarginula connelli Kilburn, 1978 Emarginula convexa Hedley, 1907 † Emarginula costata Lamarck, 1803 Emarginula costulata Deshayes, 1863 Emarginula crassa Sowerby I, 1812 Emarginula crassicostata Sowerby II in Adams & Sowerby II, 1863 Emarginula cucullata A. Adams, 1852 Emarginula curvamen Iredale, 1925 Emarginula curvata Schepman, 1908 Emarginula cuvieri Audouin, 1827 (species inquirenda) Emarginula decorata Deshayes, 1863 † Emarginula delicatissima Chapman & Gabriel, 1923 Emarginula delonguevilleae Poppe & Tagaro, 2020 † Emarginula dennanti Chapman & Gabriel, 1923 Emarginula devota Thiele, 1915 Emarginula dictya McLean, 1970 † Emarginula didactica Ludbrook, 1956 † Emarginula dilatoria Ludbrook, 1956 Emarginula dilecta Adams, 1852 Emarginula divae (van Aartsen & Carrozza, 1995) Emarginula dubia Schepman, 1908 (accepted > unreplaced junior homonym, non Emarginula dubia Defrance, 1819) Emarginula dujardini Dollfus & Dautzenberg, 1886 † † Emarginula espibosensis Lozouet, 1999 † Emarginula exigua Trautschold, 1866 Emarginula fenestrella Deshayes, 1863 Emarginula fissura (Linnaeus, 1758) - slit limpet † Emarginula fossorensis Lozouet, 1999 Emarginula foveolata Schepman, 1908 Emarginula foveolata fugitai Habe, 1953 † Emarginula foveolata Gerasimov, 1955 (accepted > unreplaced junior homonym) Emarginula fragilis Yokoyama, 1920 Emarginula fuliginea Adams, 1851 Emarginula gabensis (Gabriel, 1961) Emarginula galericulata A. Adams, 1852 † Emarginula galeriformis Marwick, 1928 † Emarginula gigantea Poppe, 2008 †Emarginula guerangeri A. d'Orbigny, 1843 Emarginula gustavi Poppe & Tagaro, 2020 Emarginula hataii Habe, 1953 Emarginula hawaiiensis Dall, 1895 † Emarginula haweraensis Powell, 1931 Emarginula hosoyai Habe, 1953 Emarginula huzardii (Payraudeau, 1826) Emarginula icosisculpta Simone & Cunha, 2014 Emarginula imaizumi Dall, 1926 Emarginula imella Dall, 1926 Emarginula janae Cossignani, 2020 Emarginula japonica Sowerby II in Adams & Sowerby II, 1863 Emarginula jungcheni K.-Y. Lai, 2019 † Emarginula kaiparica Laws, 1939 † Emarginula kaiwarensis Bandel, Gründel & P. A. Maxwell, 2000 † † Emarginula karuna Das, Bardhan & Lahiri, 1999 Emarginula kashimaensis Shikama, 1962 † Emarginula komitica Laws, 1939 Emarginula koon Kilburn, 1978 † Emarginula ladowae Eichman, 1955 Emarginula lata J.R.C. Quoy & J.P. Gaimard, 1834 ((uncertain, status in recent literature not researched) Emarginula lentiginosa D. G. Herbert, 2024 Emarginula liuzzii Poppe & Tagaro, 2020 Emarginula longifissa Sowerby II, 1866 Emarginula lorenzoi Giusti & Micali, 2019 Emarginula macclurgi Kilburn, 1978 Emarginula mactanensis Poppe & Tagaro, 2020 Emarginula maculata Adams in Adams & Sowerby II, 1863 Emarginula margarita Poppe & Tagaro, 2020 † Emarginula mariae Cossmann, 1888 † Emarginula maudensis Chapman & Gabriel, 1923 Emarginula micans Adams, 1852 Emarginula montrouzieri Souverbie, 1872 Emarginula multisquamosa Schepman, 1908 Emarginula multistriata Jeffreys, 1882 Emarginula natalensis Barnard, 1963 Emarginula nigromaculata (Thiele, 1930) Emarginula nodulicostata D. G. Herbert, 2024 Emarginula nordica Pérez Farfante, 1947 - northern emarginula † Emarginula oblonga Sandberger, 1859 Emarginula obovata Adams, 1852 Emarginula octaviana Coen, 1939 Emarginula oppressa Barnard, 1963 Emarginula paivana (Crosse, 1867) Emarginula papilionacea G. Nevill & H. Nevill, 1869 Emarginula patula Cotton, 1930 † Emarginula paucicostata Laws, 1936 Emarginula paucipunctata Schepman, 1908 † Emarginula pelagica Passy, 1832 Emarginula philippinensis Poppe & Tagaro, 2020 Emarginula phrixodes Dall, 1927 - ruffled emarginula Emarginula pittensis Marwick, 1928 Emarginula poppeorum Romani & Crocetta, 2017 † Emarginula praesicula Lozouet, 1999 Emarginula puncticulata Adams, 1852 Emarginula punctulum Piani, 1980 † Emarginula punctura S. Wood, 1848 Emarginula pustula Thiele in Küster, 1913 Emarginula quadrata Poppe & Tagaro, 2020 † Emarginula radiocostata Kiel & Bandel, 2000 Emarginula regia Habe, 1953 Emarginula retecosa Adams, 1851 Emarginula retrogyra D. G. Herbert, 2024 Emarginula rollandi P. Fischer, 1857 (uncertain: status in recent literature not researched) Emarginula rosea Bell, 1824 Emarginula salebrosa D. G. Herbert, 2024 † Emarginula sanctaecaatharine Passy, 1832 Emarginula scabricostata A. Adams, 1852 Emarginula scabriuscula Adams, 1852 Emarginula sicula Gray, 1825 - dagger emarginula Emarginula sinica Lu, 1986 Emarginula solidula Costa, 1829 Emarginula souverbiana Pilsbry, 1890 Emarginula spinosa Deshayes, 1863 † Emarginula squammata Grateloup, 1836 † Emarginula striatissima Traub, 1979 Emarginula striatula Quoy and Gaimard, 1834 - dagger emarginula Emarginula sublaevis Schepman, 1908 Emarginula subtilitexta Verco, 1908 Emarginula superba Hedley, 1906 Emarginula suspira Simone & Cunha, 2014 Emarginula tenera Locard, 1892 † Emarginula teneraeformis Lozouet, 1999 Emarginula tenuicostata Sowerby II, 1863 Emarginula teramachii Habe, 1953 Emarginula textilis Gould, 1859 in 1859-61 Emarginula thomasi Crosse, 1864 Emarginula thorektes Kilburn, 1978 Emarginula tosaensis Habe, 1953 †Emarginula transenna Tenison Woods, 1877 Emarginula tuberculosa Libassi, 1859 - tuberculate emarginula Emarginula undulata Melvill & Standen, 1903 Emarginula velascoensis Shasky, 1961 Emarginula velascoi Rehder, 1980 Emarginula viridibrunneis Poppe & Tagaro, 2020 Emarginula viridicana Herbert & Kilburn, 1985 Emarginula viridis Poppe & Tagaro, 2020 † Emarginula wannonensis G. F. Harris, 1897 † Emarginula washingtoniana Squires & Goedert, 1994 Emarginula xishaensis Lu, 1986 Emarginula yangeorum Poppe & Tagaro, 2020
Synonyms
Emarginula altilis Gould, 1859: synonym of Variemarginula punctata (A. Adams, 1852) Emarginula amitina Iredale, 1925: synonym of Emarginula dilecta A. Adams, 1852 Emarginula angustata Thiele, 1915: synonym of Tugali decussata A. Adams, 1852 Emarginula arabica A. Adams, 1852: synonym of Octomarginula arabica (A. Adams, 1852) Emarginula arconatii Issel, 1869: synonym of Montfortista panhi (Quoy & Gaimard, 1834) Emarginula australis Quoy & Gaimard, 1834: synonym of Montfortia subemarginata (Blainville, 1819) Emarginula bella Gabb, 1865: synonym of Scelidotoma bella (Gabb, 1865) Emarginula biangulata Sowerby III, 1901: synonym of Emarginella biangulata (G. B. Sowerby III, 1901) † Emarginula blainvillii Defrance, 1825: synonym of † Rimula blainvillii (Defrance, 1825) Emarginula brevirimata Deshayes, 1862: synonym of Montfortula brevirimata (Deshayes, 1862) Emarginula clathrata A. Adams & Reeve, 1850: synonym of Montfortista panhi (Quoy & Gaimard, 1834) Emarginula clathrata Pease, 1863: synonym of Emarginula dilecta A. Adams, 1852 Emarginula conica Lamarck, 1801: synonym of Emarginula fissura (Linnaeus, 1758) Emarginula conica Schumacher, 1817 non Lamarck, 1801: synonym of Emarginula rosea Bell, 1824 Emarginula dentigera Heilprin, 1889: synonym of Hemimarginula dentigera (Heilprin, 1889) Emarginula elata Locard, 1898: synonym of Emarginula christiaensi Piani, 1985 Emarginula elongata O. G. Costa, 1829: synonym of Emarginula octaviana Coen, 1939 Emarginula eximia A. Adams, 1852: synonym of Emarginella eximia (A. Adams, 1852) Emarginula flindersi Cotton, 1930: synonym of Emarginula convexa Hedley, 1907 Emarginula fuliginea Kuroda, 1941: synonym of Variemarginula variegata (A. Adams, 1852) Emarginula guernei Dautzenberg & Fischer, 1896: synonym of Emarginula tuberculosa Libassi, 1859 Emarginula hedleyi Thiele, 1915: synonym of Emarginula candida A. Adams, 1852 Emarginula incisula(sic): synonym of Emarginella incisura (A. Adams, 1852) Emarginula incisura A. Adams, 1852: synonym of Emarginella incisura (A. Adams, 1852) Emarginula kimberti Cotton, 1930: synonym of Laeviemarginula kimberti (Cotton, 1930) Emarginula modesta H. Adams, 1872: synonym of Hemimarginula modesta (H. Adams, 1872) Emarginula muelleri Forbes & Hanley, 1849: synonym of Emarginula fissura (Linnaeus, 1758) Emarginula ostheimerae Abbott, 1958: synonym of Octomarginula ostheimerae (Abbott, 1958) Emarginula panhi Quoy & Gaimard, 1834: synonym of Montfortista panhi (Quoy & Gaimard, 1834) Emarginula papillosa Risso 1826: synonym of Emarginula huzardii Payraudeau, 1826 Emarginula parmophoidea Quoy & Gaimard, 1834: synonym of Tugali elegans Gray, 1843 Emarginula peasei Thiele, 1915: synonym of Emarginula dilecta A. Adams, 1852 Emarginula phrygium Herbert & Kilburn, 1985: synonym of Agariste phrygium (Herbert & Kilburn, 1986) (original combination) Emarginula picta Dunker, 1860: synonym of Montfortula picta (Dunker, 1860) Emarginula pileata Gould, 1859: synonym of Variemarginula punctata (A. Adams, 1852) Emarginula pileum Heilprin, 1889: synonym of Hemimarginula pileum (Heilprin, 1889) Emarginula planulata A. Adams, 1852: synonym of Emarginella planulata (A. Adams, 1852) Emarginula polygonalis A. Adams, 1852: synonym of Hemitoma polygonalis (A. Adams, 1852) Emarginula pulchreclathrata Tomlin, 1932: synonym of Emarginula agulhasensis Thiele, 1925 Emarginula pumila A. Adams, 1852: synonym of Hemimarginula pumila (A. Adams, 1852) Emarginula punctata A. Adams, 1852: synonym of Variemarginula punctata (A. Adams, 1852) Emarginula reticulata Sowerby, 1813: synonym of Emarginula fissura (Linnaeus, 1758) Emarginula rugosa Quoy & Gaimard, 1834: synonym of Montfortula rugosa (Quoy & Gaimard, 1834) Emarginula scutellata Deshayes, 1863: synonym of Octomarginula scutellata (Deshayes, 1863) Emarginula sibogae Schepman, 1908: synonym of Emarginella sibogae (Schepman, 1908) Emarginula simpla Christiaens, 1987: synonym of Hemimarginula simpla (Christiaens, 1987) Emarginula stellata A. Adams, 1852: synonym of Montfortula rugosa (Quoy & Gaimard, 1834)