''Caecum'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of minute

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

s, marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

micromolluscs or

micromollusk A micromollusc is a shelled mollusc which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine molluscs, although in addition, numerous species of land snails and freshwater molluscs also ...

s in the family

Caecidae Caecidae is a taxonomic family of minute sea snails or micromolluscs, marine gastropod molluscs in the order Littorinimorpha.Bouchet, P.; Gofas, S. (2013). Caecidae. Accessed through: World Register of Marine Species at http://www.marinespecies ...

or blind shells.

Distribution

This genus occurs worldwide in warm and temperate seas. Many species live in sponges, in sandy spots on reefs, or in grassy beds in shallow waters in bays and lagoons. Some species are very common and can be extremely numerous where they do occur, such as the "beautiful caecum"(''Caecum pulchellum''), but even they can be easily overlooked as they are so tiny. Many species are considered to be uncommon, but this assessment may be a result of lack of proper sampling.

Shell description

The shells in this genus, like the others in the family, are very small with a length between 2 mm and 6 mm. Their colour is white to yellowish white and some are almost translucent. They are unusual in that the

teleoconch The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium ...

of the adult shell is a curving tube for most of its length. In the first stage of the shell it is spiral-shaped but soon becomes cylindrical. The shell is sealed with a permanent

calcareous Calcareous () is an adjective meaning "mostly or partly composed of calcium carbonate", in other words, containing lime (mineral), lime or being chalky. The term is used in a wide variety of Science, scientific disciplines. In zoology ''Calcare ...

plug at one end and (when the animal has withdrawn into the shell) with a circular, multispiral, horny operculum at the other end, the shell

aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...

. The

sculpture Sculpture is the branch of the visual arts that operates in three dimensions. Sculpture is the three-dimensional art work which is physically presented in the dimensions of height, width and depth. It is one of the plastic arts. Durable sc ...

is smooth or consists of a close-set, large number of annular ridges.

Feeding habits

These snails feed on one-celled organisms on sand grains or pebbles.

Species

Species in the genus ''Caecum'' include: * † ''

Caecum aartseni The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Van Dingenen, Ceulemans & Landau, 2016 * ''

Caecum achirona The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' (de Folin, 1867) * '' Caecum adamsi'' Raines, 2020 * '' Caecum amputatum'' Ch. Hedley, 1894 * '' Caecum amydroglyptum'' Rehder, 1980 * '' Caecum angustum'' de Folin, 1879 * '' Caecum annulatum'' Emmons, 1858 * '' Caecum antillarum''

Carpenter Carpentry is a skilled trade and a craft in which the primary work performed is the cutting, shaping and installation of building materials during the construction of buildings, ships, timber bridges, concrete formwork, etc. Carpenter ...

, 1858 - Antillean caecum * '' Caecum arabicum'' Issel, 1869 * '' Caecum armoricum'' de Folin, 1869 - De Folin's lagoon snail. This species is fully protected in the United Kingdom under the

Wildlife and Countryside Act 1981 The Wildlife and Countryside Act 1981 (c. 69) is an act of Parliament in the United Kingdom implemented to comply with European Council Directive 79/409/EEC on the conservation of wild birds. In short, the act gives protection to native species ...

since 1992. * '' Caecum atlantidis'' R. B. Watson, 1897 * '' Caecum attenuatum'' de Folin, 1879 * '' Caecum auriculatum'' de Folin, 1868 * '' Caecum austrafricanum'' Vannozzi, Pizzini & Raines, 2015 * '' Caecum australe'' Pizzini & Raines, 2011 * '' Caecum bathus'' Pizzini, Raines & Vannozzi, 2013 * † '' Caecum benhami'' Goedert & Raines, 2016 * † '' Caecum bensoni'' Goedert & Raines, 2016 * '' Caecum beaufortensis'' Ward and Blackwelder 1987 * ''

Caecum bimamillatum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' de Folin, 1867 * '' Caecum bimarginatum'' Carpenter, 1859 * '' Caecum biomaglo'' Vannozzi, 2023 * '' Caecum bipartitum'' de Folin, 1870 * ''

Caecum borneoense The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' de Folin, 1867 * '' Caecum bounty'' Pizzini & Raines, 2011 * '' Caecum brasilicum'' de Folin, 1874 * '' Caecum brennani'' Raines & Pizzini, 2009 * '' Caecum breve'' de Folin, 1867 * '' Caecum bucerium'' Golikov, 1967 * ''

Caecum californicum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Dall, 1885 - California caecum * '' Caecum calvertense'' Martin, 1904 * '' Caecum campanulatum'' Raines & Pizzini, 2005 * ''

Caecum campe The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Pilsbry and Olsson, 1941 * '' Caecum carolinianum'' Dall, 1892 - Carolina caecum * † '' Caecum carpenteri'' Deshayes, 1861 * '' Caecum caverna'' Moolenbeek, Faber & Iliffe, 1989 * '' Caecum chilense'' Stuardo, 1962 * '' Caecum chinense'' de Folin, 1879 * ''

Caecum chipolanum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Gardner, 1947 * '' Caecum cinctum'' Olsson & Harbison, 1953 * '' Caecum circumvolutum'' de Folin, 1867 * '' Caecum clarkii'' P. P. Carpenter, 1858 * ''

Caecum clarum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Lamy, 1910 x de Folin MS/small> * '' Caecum clathratum'' P. P. Carpenter, 1857 * '' Caecum clava'' de Folin, 1867 - club caecum * '' Caecum cocoense'' Sibaja-Cordero, García-Méndez & Troncoso, 2013 * '' Caecum codoceoae'' Gálvez & Huidobro, 2017 * '' Caecum condylum'' Moore, 1969 - bone caecum * '' Caecum continens'' Van der Linden & Moolenbeek, 2000 * '' Caecum cooki'' Pizzini & Raines, 2011 * '' Caecum cooperi'' S. I. Smith, 1860 - Cooper's Atlantic caecum * '' Caecum corrugatulum'' Carpenter, 1857 * '' Caecum crassum'' de Folin, 1870 * '' Caecum crebricinctum''

, 1864 - many-named caecum * '' Caecum crispum'' A. E. Verrill & Bush, 1900 * '' Caecum crystallinum'' de Folin, 1880 * '' Caecum cubitatum'' (de Folin, 1868) - smooth caecum * ''

Caecum cuspidatum ''Caecum cuspidatum'' is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Caecidae Caecidae is a taxonomic family of minute sea snails or micromolluscs, marine gastropod molluscs in the order Littorini ...

'' Chaster, 1896 * '' Caecum cycloferum'' de Folin, 1867 - fatlip caecum * ''

Caecum dakuwaqa The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum dalli'' Bartsch, 1920 * '' Caecum danielei'' Pizzini & Raines, 2011 * '' Caecum debile'' A. E. Verrill & Bush, 1900 * '' Caecum delicatulum'' A. E. Verrill & Bush, 1900 * '' Caecum derjugini'' Golikov, 1967 * '' Caecum dextroversum'' P. P. Carpenter, 1858 * '' Caecum digitulum'' Hedley, 1904 * '' Caecum diminutum'' C. B. Adams, 1852 * '' Caecum directum'' Vannozzi, 2019 * '' Caecum donmoorei'' Mitchell-Tapping, 1979 * '' Caecum draperi'' Raines, 2020 * '' Caecum dux'' de Folin, 1871 * '' Caecum eburneum'' C. B. Adams, 1852 * '' Caecum egenum'' Vannozzi, 2017 * '' Caecum elegantissimum'' Carpenter, 1859 * '' Caecum eliezeri'' Absalao, 1997 * '' Caecum elongatum'' P. P. Carpenter, 1857 *'' Caecum engli'' Nofroni, Pizzini, Oliverio, 1997 * '' Caecum eunoi'' Nofroni, Pizzini, Oliverio, 1997 * '' Caecum exile'' de Folin, 1875 * '' Caecum farcimen'' P. P. Carpenter, 1857 * ''

Caecum fijiense The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Pizzini, Raines & Vannozzi, 2013 * ''

Caecum firmatum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' C. B. Adams, 1852 * '' Caecum floridanum'' Stimpson, 1851 - Florida caecum * '' Caecum folini'' Kisch, 1959 * '' Caecum frugi'' Vannozzi, 2019 * '' Caecum galapagoense'' Raines, 2020 * ''

Caecum geigeri The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Pizzini & Raines, 2011 * ''

Caecum glabellum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' A. Adams, 1868 * '' Caecum glabriforme'' Carpenter, 1857 * '' Caecum glabrum'' (Montagu, 1803) * '' Caecum gofasi'' Pizzini & Nofroni, 2001 * '' Caecum granulatum'' Vannozzi, 2019 * '' Caecum greensboroense'' Martin, 1904 * '' Caecum gulosum'' Hedley, 1899 * '' Caecum gurgulio''

, 1858 - windpipe caecum * ''

Caecum hemphilli The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix (a ...

'' Bartsch, 1920 * '' Caecum heptagonum'' (Bartsch, 1920) * '' Caecum heterochromum'' Raines & Pizzini, 2005 * '' Caecum hyalinum'' Vannozzi, 2022 * '' Caecum imbricatum''

, 1858 - imbricate caecum * '' Caecum incisum'' Vannozzi, Pizzini & Raines, 2015 * '' Caecum imperforatum'' Kanamacher, 1798 (''nomen dubium'') * '' Caecum inclinatum'' de Folin, 1869 * ''

Caecum infimum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix (a ...

'' de Folin, 1867 * '' Caecum inflatulum'' Vannozzi, 2017 * '' Caecum inflatum'' de Folin, 1867 * '' Caecum inhacaense'' Albano & Pizzini 2011 * '' Caecum insculptum'' Carpenter, 1857 * '' Caecum insularum'' Moore, 1969 * ''

Caecum intortum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Vannozzi, Pizzini & Raines, 2015 * '' Caecum invisibile'' Egger & Jörger, 2020 * '' Caecum iricolor'' Vannozzi, 2023 * '' Caecum japonicum'' (Habe, 1978) * '' Caecum johnsoni'' Winkley, 1908 * '' Caecum jonatani'' Espinosa, Ortea & Fernandez-Garcés, 2007 * '' Caecum jonesae'' Swinnen & Simone, 2024 * '' Caecum jucundum'' de Folin, 1867 * '' Caecum knysnaense'' Vannozzi, Pizzini & Raines, 2015 * ''

Caecum kontiki The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Pizzini & Raines, 2011 * '' Caecum laeve'' C.B. Adams, 1852 * '' Caecum lapita'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum laqueatum'' C. B. Adams, 1852 * † '' Caecum larieyense'' Lozouet, Lesport & Renard, 2001 * '' Caecum leilae'' Vannozzi, Pizzini & Raines, 2015 * '' Caecum lightfootanum'' Raines, 2020 * ''

Caecum limnetes The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Long, 1972 * '' Caecum limpidum'' de Folin, 1874 * '' Caecum lindae'' Vannozzi, Pizzini & Raines, 2015 * '' Caecum lineicinctum'' de Folin, 1880 * '' Caecum liratocinctum''

, 1857 * '' Caecum lohri'' Strong & Hertlein, 1939 * '' Caecum loyaltense'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum lozoueti'' Vannozzi & Renda, 2024 * ''

Caecum lucidum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' de Folin, 1867 * ''

Caecum macrum ''Caecum macrum'' is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Caecidae Caecidae is a taxonomic family of minute sea snails or micromolluscs, marine gastropod molluscs in the order Littorinimorp ...

'' Van der Linden & Moolenbeek, 2000 * '' Caecum maestratii'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum magellanicum'' di Geronimo, Privitera & Valdovinos, 1995 * '' Caecum malleatum'' de Folin, 1867 * † '' Caecum mammillatum'' S. V. Wood, 1848 * '' Caecum maori'' Pizzini & Raines, 2006 * '' Caecum maraisi'' Vannozzi, Pizzini & Raines, 2015 * ''

Caecum marginatum ''Caecum marginatum'' is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), aff ...

'' de Folin, 1869 * '' Caecum marmoratum'' de Folin, 1869 * '' Caecum massambabense'' Absalao, 1994 * '' Caecum mauritianum'' de Folin, 1867 * '' Caecum metamorphosicum'' S. Lima, Santos & Absalão, 2013 * '' Caecum microannulatum'' Vannozzi & Renda, 2024 * '' Caecum microstriatum'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum miliarium'' Vannozzi & Renda, 2024 * † '' Caecum mineuri'' Lozouet, 1999 * '' Caecum mirificum'' de Folin, 1867 * '' Caecum modestum'' de Folin, 1867 * '' Caecum monstrosum'' C. B. Adams, 1852 * ''

Caecum moorei The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' (Marincovich, 1973) * '' Caecum morgan'' Vannozzi, Pizzini & Raines, 2015 * ''

Caecum multicostatum ''Caecum multicostatum'' is a species of minute sea snail, a marine (ocean), marine gastropod mollusk or micromollusk in the family (biology), family Caecidae. Distribution Caecum Multicostatum can be found in the Caribbean Sea, Gulf of Mexico, ...

'' de Folin, 1867 * '' Caecum musorstomi'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum nasutum'' Vannozzi, 2019 * † '' Caecum nemoralis'' Lozouet, 2015 * '' Caecum neocaledonicum'' de Folin, 1867 * '' Caecum neoguineanum'' Vannozzi, 2019 * '' Caecum nofronii'' Vannozzi, 2019 * ''

Caecum oahuense The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' H. A. Pilsbry, 1921 * '' Caecum obtusum'' Carpenter, 1857 * '' Caecum occidentale'' (Bartsch, 1920) - western caecum * '' Caecum orcutti'' ( Dall, 1885) * '' Caecum paradoxum'' de Folin, 1867 * '' Caecum parvum'' C. B. Adams, 1852 * '' Caecum pascuanum'' Raines & Pizzini, 2005 * † '' Caecum pertenuis'' Laws, 1941 * ''

Caecum planum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' de Folin, 1874 * '' Caecum patuxentium'' Martin, 1904 * '' Caecum plicatum''

, 1858 - plicate caecum * '' Caecum pollicare'' Carpenter, 1859 * '' Caecum praegrande'' Vannozzi, 2017 * ''

Caecum profundicolum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Bartsch, 1920 - deepwater caecum * '' Caecum properegulare'' Mansfield, 1925 * '' Caecum pulchellum'' Stimpson, 1851 - beautiful caecum * '' Caecum pygmaeum'' C. B. Adams, 1852 * '' Caecum quadratum'' P. P. Carpenter, 1857 * '' Caecum rapanuiense'' Raines & Pizzini, 2005 * '' Caecum regulare''

, 1858 * '' Caecum rehderi'' Raines & Pizzini, 2005 * '' Caecum restrictum'' Vannozzi & Renda, 2024 * '' Caecum reversum'' Carpenter, 1857 * '' Caecum richthofeni'' A. M. Strong & J. G. Hertlein, 1939 * '' Caecum rijgersmai'' Jong & Coomans, 1988 * † '' Caecum roederi'' Raines, C. L. Powell & LaFollette, 2023 * '' Caecum rolani'' Pizzini & Nofroni, 2001 * '' Caecum rosanum'' Bartsch, 1920 * '' Caecum rostratum'' de Folin, 1881 * '' Caecum ruggerii'' Pizzini, 1997 * '' Caecum rugulosum'' Phil, 1836 * ''

Caecum ryssotitum ''Caecum ryssotitum'' is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Caecidae. Distribution Description The maximum recorded shell Shell may refer to: Architecture and design * Shell (structure), ...

'' de Folin, 1867 - minute caecum * '' Caecum searleswoodii'' Carpenter, 1859 * ''

Caecum semilaeve The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Carpenter, 1857 * '' Caecum senegambianum'' de Folin, 1870 * '' Caecum sepimentum'' de Folin, 1868 * '' Caecum shaskyi'' Raines, 2020 * '' Caecum simplicissimum'' Thiele, 1925 * ''

Caecum sinuatum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix (a ...

'' de Folin, 1867 * '' Caecum skoglundae'' Pizzini, Raines & Nofroni, 2007 * '' Caecum smriglioi'' Pizzini, Nofroni & Bonfitto, 2008 * '' Caecum someri'' (de Folin, 1867) * '' Caecum spiculum'' Raines, 2020 * '' Caecum striatum'' de Folin, 1875 * ''

Caecum strictum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' de Folin, 1871 * '' Caecum strigosum'' de Folin, 1868 * ''

Caecum subannulatum ''Caecum subannulatum'' is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Caecidae Caecidae is a taxonomic family of minute sea snails or micromolluscs, marine gastropod molluscs in the order Littori ...

'' de Folin, 1870 * '' Caecum subaustrale'' Stuardo, 1970 * '' Caecum subconicum'' Carpenter, 1857 * '' Caecum subcylindratum'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum subflavum'' de Folin, 1879 * '' Caecum subimpressum'' P. P. Carpenter, 1857 * ''

Caecum subobsoletum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' Carpenter, 1857 * '' Caecum subornatum'' de Folin, 1874 * '' Caecum subspirale'' Carpenter, 1857 * '' Caecum subquadratum'' Carpenter, 1859 * '' Caecum subspirale'' Carpenter, 1857 * '' Caecum subvolutum'' de Folin, 1874 * '' Caecum succineum'' de Folin, 1879 * '' Caecum swinneni'' Nofroni, Pizzini, Oliverio, 1997 * ''

Caecum taeniatum The cecum ( caecum, ; plural ceca or caeca, ) is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, t ...

'' de Folin, 1869 * '' Caecum tahitianum'' Pizzini & Raines, 2011 * '' Caecum temporale'' Vannozzi & Renda, 2024 * '' Caecum tenue'' Verrill & Bush, 1900 * '' Caecum tenuicostatum'' de Folin, 1881 * '' Caecum tenuiliratum'' Carpenter, 1857 * † '' Caecum tenuistriatum'' O. Boettger, 1869 * '' Caecum teres'' Carpenter, 1857 * '' Caecum textile'' de Folin, 1867 - textile caecum * '' Caecum tornatum'' A. E. Verrill & Bush, 1900 * '' Caecum torquetum'' de Folin, 1867 * '' Caecum tortile'' Dall, 1892 - twisted caecum * '' Caecum trachea'' G. Montagu, 1803 * '' Caecum trindadense'' S. Lima, Santos & Absalão, 2013 * '' Caecum troglodyta'' Moolenbeek, Faber & Iliffe, 1989 * † '' Caecum tumidum'' Carpenter, 1858 * '' Caecum uncinatum'' de Folin, 1867 * '' Caecum undatum'' P. P. Carpenter, 1857 * '' Caecum vanuatuarum'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum varanoi'' Pizzini, Nofroni & Bonfitto, 2008 * '' Caecum variegatum'' de Folin, 1867 * '' Caecum venosum'' de Folin, 1867 * † '' Caecum verai'' Moreno, Peñas & Rolán, 2003 * '' Caecum vertebrale'' Ch. Hedley, 1899 * '' Caecum vicinum'' de Folin, 1870 * '' Caecum virginiae'' Pizzini, Raines & Vannozzi, 2013 * '' Caecum vitreum'' P. P. Carpenter, 1858 * '' Caecum wakense'' Raines & Vannozzi, 2024 * '' Caecum wami'' Raines & Pizzini, 2009 * '' Caecum wayae'' Pizzini & Nofroni, 2001 * '' Caecum zaagmani'' Jong and Coomans, 1988 ; Subgenera brought into synonymy : * ''Caecum (Defolinia)'' Weisbord, 1962: synonym of ''Caecum'' Fleming, 1813 * ''Caecum (Meioceras)'' Carpenter, 1859: synonym of '' Meioceras'' Carpenter, 1859 ;Species brought into synonymy: * ''Caecum abnormale'' Carpenter, 1857: synonym of '' Caecum subspirale'' Carpenter, 1857 * ''Caecum amaltheanum'' Hedley, 1899: synonym of ''

Mauroceras legumen ''Mauroceras'' is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Caecidae.MolluscaBase eds. (2021). MolluscaBase. Mauroceras Vannozzi, 2019. Accessed through: World Register of Marine Species at: https://w ...

'' (Hedley, 1899) * ''Caecum amamiense'' Habe, 1978: synonym of '' Mauroceras amamiense'' (Habe, 1978) * ''Caecum arcuatum'' de Folin, 1867 : synonym of '' Caecum sepimentum'' de Folin, 1868 * ''Caecum bahiahondaense'' A. M. Strong & J. G. Hertlein, 1939 : synonym of '' Caecum clathratum'' Carpenter, 1857 * ''Caecum bakeri'' ( Bartsch, 1920): synonym of '' Caecum dextroversum'' Carpenter, 1857 * ''Caecum berthae'' Lange de Morretes, 1954: synonym of ''Caecum plicatum'' Carpenter, 1858 * ''Caecum biminicola'' Pilsbry, 1951: synonym of ''Caecum plicatum'' Carpenter, 1858 * ''Caecum buccina'' de Folin, 1870: synonym of ''Caecum circumvolutum'' de Folin, 1867 * ''Caecum bucheri'' Parenzan, 1979: synonym of '' Filogranula annulata'' (O. G. Costa, 1861) * ''Caecum butoti'' Jong & Coomans, 1988 : synonym of '' Caecum marmoratum'' de Folin, 1869 * ''Caecum capitanum'' de Folin, 1874: synonym of ''Caecum pulchellum'' Stimpson, 1851 * ''Caecum carmenense'' de Folin, 1870: synonym of ''Caecum circumvolutum'' de Folin, 1867 * ''Caecum carpenteri'' (Bartsch, 1920): synonym of '' Caecum adamsi'' Raines, 2020 * ''Caecum cayoense'' Rehder, 1943: synonym of ''Caecum floridanum'' Stimpson, 1851 * ''Caecum clenchi'' Olsson & McGinty, 1958: synonym of'' Caecum cycloferum'' de Folin, 1867 * ''Caecum compactum'' P. P. Carpenter, 1857 : synonym of '' Caecum quadratum'' Carpenter, 1857 * ''Caecum conjunctum'' de Folin, 1867: synonym of ''Caecum pulchellum'' Stimpson, 1851 * ''Caecum contractum'' de Folin, 1870: synonym of ''Caecum bipartitum'' de Folin, 1870 * ''Caecum corneum'' R. W. Dunker, 1875 : synonym of ''

'' de Folin, 1867 * ''Caecum cornucopiae'' (

, 1858) - horn-of-plenty caecum : synonym of ''

Meioceras cornucopiae ''Meioceras cornucopiae'' is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Caecidae. Distribution Description The maximum recorded shell Shell may refer to: Architecture and design * Shell (structur ...

'' Carpenter, 1859 * ''Caecum coronatum'' de Folin, 1867: synonym of ''Caecum imbricatum'' Carpenter, 1858 * ''Caecum coronellum'' Dall, 1892: synonym of ''Caecum cycloferum'' de Folin, 1867 * ''Caecum costatum'' A. E. Verrill, 1872: synonym of ''Caecum cooperi'' S. I. Smith, 1860 * ''Caecum crassicostum'' Gabb, 1881: synonym of ''Caecum floridanum'' Stimpson, 1851 * ''Caecum curtatum'' de Folin, 1867: synonym of ''Caecum pulchellum'' Stimpson, 1851 * ''Caecum decussatum'' de Folin, 1869: synonym of ''Caecum plicatum'' Carpenter, 1858 * ''Caecum dux'' de Folin, 1871: synonym of ''Caecum floridanum'' Stimpson, 1851 * ''Caecum eburneum'' de Folin, 1886: synonym of '' Caecum folini'' Kisch, 1959 * ''Caecum elagans'' Deregaslavtseva, 1891: synonym of ''Caecum trachea'' (Montagu, 1803) * ''Caecum elegans'' Perejoslavitseva, 1831 : synonym of '' Caecum trachea'' (Montagu, 1803) * ''Caecum fasciatum'' de Folin, 1876: synonym of ''Caecum trachea'' (Montagu, 1803) * ''Caecum formulosum'' de Folin, 1869: synonym of ''Caecum imbricatum'' Carpenter, 1858 * ''Caecum fulvum'' Kisch, 1959: synonym of ''Caecum neocaledonicum'' de Folin, 1867 * ''Caecum heladum'' Olsson and Harbison, 1953 - fine-line caecum : synonym of ''

'' de Folin, 1867 * ''Caecum heterapex'' T. Habe, 1963 : synonym of ''

'' Lamy, 1910 * ''Caecum hinoidei'' T. Habe, 1978 : synonym of '' Caecum neocaledonicum'' de Folin, 1867 * ''Caecum insigne'' de Folin, 1867: synonym of ''Caecum imbricatum'' Carpenter, 1858 * ''Caecum instructum'' de Folin, 1870: synonym of ''Caecum bipartitum'' de Folin, 1870 * ''Caecum irregulare'' de Folin, 1867: synonym of '' Caecum floridanum'' Stimpson, 1851 * ''Caecum legumen'' Hedley, 1904: synonym of ''

Meioceras legumen ''Meioceras'' is a genus of minute sea snails, marine (ocean), marine gastropod mollusks or micromollusks in the family (biology), family Caecidae. Species Species within the genus ''Meioceras'' include: * ''Meioceras cornucopiae'' Carpenter, ...

'' (Hedley, 1904) * ''Caecum leptoglyphos'' de Folin, 1881: synonym of ''Caecum textile'' de Folin, 1867 * ''Caecum lermondi'' Dall, 1924: synonym of ''

Meioceras nitidum ''Meioceras nitidum'' is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Caecidae. Distribution Western Atlantic: North America. Description The maximum recorded shell Shell may refer to: Architectur ...

'' ( Stimpson, 1851) * ''Caecum lightfootae'' Pizzini, Nofroni, Oliverio, 1994 : synonym of '' Caecum atlantidis'' Watson, 1897 * ''Caecum lilianum'' Ch. Hedley, 1903 : synonym of '' Caecum sepimentum'' de Folin, 1867 * ''Caecum maculatum'' T. Habe, 1963 : synonym of '' Caecum sepimentum'' de Folin, 1867 * ''Caecum malleatum'' var. ''sublaevis'' de Folin, 1868: synonym of '' Caecum modestum'' de Folin, 1868 * ''Caecum microcyclus'' de Folin, 1879 : synonym of '' Caecum attenuatum'' de Folin, 1880 (subsequent spelling) * ''Caecum nitidum'' Stimpson, 1851 - little horn caecum: synonym of ''

'' ( Stimpson, 1851) * ''Caecum obesum'' A. E. Verrill & Bush, 1900 : synonym of ''Caecum plicatum'' Carpenter, 1858 * ''Caecum orientale'' de Folin, 1868 : synonym of ''Caecum clarkii'' Carpenter, 1859 * ''Caecum phronimum'' de Folin, 1867 : synonym of ''Caecum floridanum'' Stimpson, 1851 * ''Caecum puntagordanum'' Weisbord, 1962: synonym of '' Caecum floridanum'' Stimpson, 1851 * ''Caecum putnamense'' Mansfield, 1924 : synonym of ''Caecum johnsoni'' Winkley, 1908 * ''Caecum rotundum'' de Folin, 1868 : synonym of ''

'' ( Stimpson, 1851) * ''Caecum saavedrae'' Beltran, 1965 : synonym of ''Caecum auriculatum'' de Folin, 1868 * ''Caecum sardinianum'' de Folin, 1869 : synonym of '' Caecum clarkii'' Carpenter, 1859 * ''Caecum sculptum'' de Folin, 1881: synonym of ''Caecum imbricatum'' Carpenter, 1858 * ''Caecum semitracheum'' S. Brusina, 1865 : synonym of '' Caecum clarkii'' Carpenter, 1859 * ''Caecum smithi'' Cooper, 1872: synonym of Caecum cooperi S. Smith, 1860 * ''Caecum solitarium'' Oliver, 1915 : synonym of '' Caecum maori'' Pizzini & Raines, 2006 * ''Caecum syriacum'' de Folin, 1869: synonym of ''Caecum auriculatum'' de Folin, 1868 * ''Caecum tenue'' A. E. Verrill & Bush, 1900: synonym of ''Caecum armoricum'' de Folin, 1869 * ''Caecum termes'' Heilprin, 1889: synonym of ''Caecum plicatum'' Carpenter, 1858 * ''Caecum tomaculum'' (Weisbord, 1962) : synonym of ''

'' de Folin, 1867 * ''Caecum triornatum'' de Folin, 1870: synonym of ''Caecum bipartitum'' de Folin, 1870 * ''Caecum uvea'' Pizzini, Raines & Vannozzi, 2013: synonym of '' Caecum folini'' Kisch, 1959 * ''Caecum veracruzanum'' Collins, 1937 : synonym of '' Caecum circumvolutum'' de Folin, 1867 * ''Caecum vestitum'' de Folin, 1868 - Vera Cruz caecum: synonym of '' Caecum circumvolutum'' de Folin, 1867 ;

Nomina dubia In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium,'' it may be impossible to determine whether a ...

: * ''Caecum abreviatum'' de Folin, 1870 * ''Caecum achates'' Sykes, 1925: taxon inquirendum * ''Caecum bicinctum'' de Folin, 1870 * ''Caecum gracile'' Carpenter, 1858 * ''Caecum hemisphericum'' de Folin, 1867 * ''Caecum imperforatum'' (Kanmacher, 1798)

References

* Vaught, K.C. (1989). ''A classification of the living Mollusca''. American Malacologists: Melbourne, FL (USA). . XII, 195 pp * 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 * Spencer, H.; Marshall. B. (2009). ''All Mollusca except Opisthobranchia''. In: Gordon, D. (Ed.) (2009). New Zealand Inventory of Biodiversity. Volume One: Kingdom Animalia. 584 pp * Aartsen, J. J. van (1977). Revision of the East Atlantic and Mediterranean Caecidae. - Basteria 41 (1/4): 7-19

External links

Moore, Donald R., ''The Systematic Position of the Family Caecidae (Mollusca: Gastropoda)'', Bulletin of Marine Science, Volume 12, Number 4, 1962, pp. 695-701(7)

Moore, Donald R., ''Ecological and Systematic Notes on Caecidae from St. Croix, U.S. Virgin Islands'', Bulletin of Marine Science, Volume 22, Number 4, December 1972, pp. 881-899(19)
* Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979
Shell-bearing Mollusca: : Caecidae

Malacolog Version 4.1.0 : A Database of Western Atlantic Marine Mollusca

The Paleobiology Database : Classification of the Caecidae

Goedert J.L. & Raines B.K. (2016). First Paleogene Caecidae (Gastropoda: Truncatelloidea) from the northeastern Pacific Ocean and the earliest record for the genus Caecum Fleming, 1813. Proceedings of the Biological Society of Washington. 129: 38-47
File:Caecum auriculatum 001.jpg, '' Caecum auriculatum'' File:Caecum subannulatum 001.jpg, ''

'' {{Taxonbar, from=Q4878190 Caecidae Gastropod genera