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Emarginula

Emarginula is a genus of small keyhole limpets, marine gastropod molluscs in the family Fissurellidae.

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==
Species
According to the World Register of Marine Species (WoRMS), species within the genus Emarginula include: • 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==
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) • Emarginula subclathrata Pilsbry, 1890: synonym of Emarginula dilecta A. Adams, 1852 • Emarginula subemarginata Blainville, 1819: synonym of Montfortia subemarginata (Blainville, 1819) • Emarginula subrugosa Thiele, 1916: synonym of Hemimarginula subrugosa (Thiele, 1916) • Emarginula sulcifera A. Adams, 1852: synonym of Montfortulana sulcifera (A. Adams, 1852) • Emarginula tricarinata Pilsbry, 1890: synonym of Montfortista panhi (Quoy & Gaimard, 1834) • Emarginula tricostata G.B. Sowerby I, 1823: synonym of Hemitoma octoradiata (Gmelin, 1791) • Emarginula vadososinuata Yokoyama, 1922: synonym of Tugalina vadososinuata (Yokoyama, 1922) • Emarginula vadum Barnard, 1963: synonym of Emarginula undulata Melvill & Standen, 1903 • Emarginula variegata A. Adams, 1852: synonym of Variemarginula variegata (A. Adams, 1852) ==References==
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