''Tectus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of sea snails,

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

s in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Tegulidae Tegulidae is a family of small to large sea snails, marine gastropod mollusks in the superfamily Trochoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Bouchet, P. (2013). Tegulidae Kuroda, Habe & Oyama, 1971. Acce ...

Description

The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal

aperture In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An ...

is very oblique, angular, and wider than long. The outer

lip The lips are the visible body part at the mouth of many animals, including humans. Lips are soft, movable, and serve as the opening for food intake and in the articulation of sound and speech. Human lips are a tactile sensory organ, and can be ...

is lirate within. The

columella Lucius Junius Moderatus Columella (; Arabic: , 4 – ) was a prominent writer on agriculture in the Roman Empire. His ' in twelve volumes has been completely preserved and forms an important source on Roman agriculture, together with the ...

is very short, vertical, with a strong spiral fold, ending anteriorly in a knob or point.

Distribution

This marine genus has a wide distribution. It occurs in the

Persian Gulf The Persian Gulf ( fa, خلیج فارس, translit=xalij-e fârs, lit=Gulf of Fars, ), sometimes called the ( ar, اَلْخَلِيْجُ ٱلْعَرَبِيُّ, Al-Khalīj al-ˁArabī), is a mediterranean sea in Western Asia. The bo ...

, the

Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; ...

, in the Central and East Indian Ocean and off

East Africa East Africa, Eastern Africa, or East of Africa, is the eastern subregion of the African continent. In the United Nations Statistics Division scheme of geographic regions, 10-11-(16*) territories make up Eastern Africa: Due to the histori ...

Oceania Oceania (, , ) is a region, geographical region that includes Australasia, Melanesia, Micronesia, and Polynesia. Spanning the Eastern Hemisphere, Eastern and Western Hemisphere, Western hemispheres, Oceania is estimated to have a land area of ...

, Indo-China, Indo-Malaysia, the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

, East

India India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...

, Australia (

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

Northern Territory The Northern Territory (commonly abbreviated as NT; formally the Northern Territory of Australia) is an Australian territory in the central and central northern regions of Australia. The Northern Territory shares its borders with Western Au ...

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to ...

Kermadec Islands The Kermadec Islands ( mi, Rangitāhua) are a subtropical island arc in the South Pacific Ocean northeast of New Zealand's North Island, and a similar distance southwest of Tonga. The islands are part of New Zealand. They are in total ...

, New Caledonia,

Anadaman Islands The Andaman Islands () are an archipelago in the northeastern Indian Ocean about southwest off the coasts of Myanmar's Ayeyarwady Region. Together with the Nicobar Islands to their south, the Andamans serve as a maritime boundary between the ...

Species

Species within the genus ''Tectus'' include: * † ''

Tectus altavillensis ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' (Defrance, 1828) * ''

Tectus architectonicus ''Tectus architectonicus'' is a species of sea snail, a marine gastropod mollusk in the family Tegulidae. Description The imperforate, whitish shell has a conical shape. The whorls are flat, subimbricating, and longitudinally costate. The ri ...

'' A. Adams, 1853 * † ''

Tectus athenasi ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' (Vasseur, 1882) * † ''

Tectus aulacophorus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' (Cossmann & Pissarro, 1905) * † ''

Tectus bareti ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' (Vasseur, 1882) * † ''

Tectus bourdoti ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' (Cossmann & Pissarro, 1902) * † ''

Tectus branderi ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (Defrance, 1828) * † ''

Tectus britannus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (Vasseur, 1882) * † ''

Tectus chavani ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' Glibert, 1962 * † ''

Tectus chenui ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' Le Renard, 1994 * † ''

Tectus cognatus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (J. de C. Sowerby, 1840) * † ''

Tectus crenularis ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (Lamarck, 1804) * ''

Tectus (Tectus) dentatus ''Tectus dentatus'', common name the toothed top shell, is a species of sea snail, marine gastropod mollusk in the family Tegulidae. Description ''Tectus dentatus'' has a shell that reaches a size of 40 – 150 mm. The large, imperforat ...

'' (Forskål in Niebuhr, 1775) * † ''

Tectus extraconicus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' Gain, Belliard & Le Renard, 2019 * ''

Tectus fabrei ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (Montrouzier in Fischer, 1878) * ''

Tectus fenestratus ''Tectus fenestratus'', common name the fenestrate top shell or the latticed top shell, is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.Bouchet, P. (2012). ''Tectus fenestratus'' (Gmelin, 1791). Accessed through: ...

'' (Gmelin, 1791) * † ''

Tectus fluctus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than l ...

'' Gain, Belliard & Le Renard, 2019 * † ''

Tectus fredevillensis ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' Gain, Belliard & Le Renard, 2019 * † ''

Tectus funiculosus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (Deshayes, 1832) * † ''

Tectus gabrielis ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' (d'Orbigny, 1850) * † ''

Tectus gervillii ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' Gain, Belliard & Le Renard, 2019 * † ''

Tectus leae ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' Gain, Belliard & Le Renard, 2019 * † ''

Tectus margaritaceus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (Deshayes, 1832) * ''

Tectus mauritianus ''Tectus mauritianus'', common name the Mauritius top shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The height of the shell varies between 40 mm and 60 mm, it ...

'' (Gmelin, 1791) * † ''

Tectus monilifer ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' (Lamarck, 1804) * † ''

Tectus montissanctipetri ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (Binkhorst, 1861) * † ''

Tectus morgani ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than long ...

'' (Cossmann & Pissarro, 1905) * '' Tectus noduliferus'' (Lamarck, 1822) * † ''

Tectus ornatus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' (Lamarck, 1804) * † ''

Tectus planibasis ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than lo ...

'' Gain, Belliard & Le Renard, 2019 * ''

Tectus pyramis ''Tectus pyramis'', common name the pyram top shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The size of the shell varies between 45 mm and 105 mm. The imperfo ...

'' (Born, 1778) * † ''

Tectus richardi ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' Gain, Belliard & Le Renard, 2019 * ''

Tectus royanus ''Tectus royanus'' is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.Rosenberg, G. (2012). ''Tectus royanus''. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdeta ...

'' (Iredale, 1912) * † ''

Tectus spinalis ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' Gain, Belliard & Le Renard, 2019 * † ''

Tectus subcanaliculatus ''Tectus'' is a genus of sea snails, marine gastropod mollusks in the family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal aperture is very oblique, angular, and wider than ...

'' (Deshayes, 1863) * † ''

Tectus torticostulus ''Tectus'' is a genus of sea snails, marine (ocean), marine gastropod mollusks in the family (biology), family Tegulidae. Description The shell has a pyramidal shape. Its base is flat, without false-umbilicus. The rhomboidal Aperture (mollusc), ...

'' Gain, Belliard & Le Renard, 2019 * ''

Tectus triserialis ''Tectus triserialis'' is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.Bouchet, P. (2012). ''Tectus triserialis'' (Lamarck, 1822). Accessed through: World Register of Marine Species at http://www.marinespecies.org ...

'' (Lamarck, 1822) ;Species brought into synonymy : * ''Tectus concavus'' (Gmelin, 1791): synonym of ''

Infundibulum concavum ''Infundibulum concavum'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. Description The height of the shell varies between 35 mm and 40 mm, its diameter between 45 mm and 47&nb ...

'' (Gmelin, 1791) * ''Tectus conus'' (Gmelin, 1791): synonym of ''

Rochia conus ''Rochia conus'', common name the cone top shell, is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.MolluscaBase eds. (2022). MolluscaBase. Rochia conus (Gmelin, 1791). Accessed through: World Register of Marine Spe ...

'' (Gmelin, 1791) * ''Tectus elatus'' (Lamarck, 1822): synonym of ''

Rochia elata ''Rochia elata'' is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.MolluscaBase eds. (2022). MolluscaBase. Rochia elata (Lamarck, 1822). Accessed through: World Register of Marine Species at: https://www.marinespec ...

'' (Lamarck, 1822) * ''Tectus magnificus'' Poppe, 2004: synonym of ''

Rochia magnifica ''Rochia magnifica'' is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.MolluscaBase eds. (2022). MolluscaBase. Rochia magnifica (Poppe, 2004). Accessed through: World Register of Marine Species at: https://www.marin ...

'' (Poppe, 2004) * ''Tectus maximus'' (Koch in Philippi, 1844): synonym of ''

Rochia maxima ''Rochia maxima'' is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.MolluscaBase eds. (2022). MolluscaBase. Rochia maxima (Koch, 1844). Accessed through: World Register of Marine Species at: https://www.marinespecies ...

'' (Koch, 1844) * ''Tectus niloticus'' (Linnaeus, 1767): synonym of ''

Rochia nilotica ''Rochia nilotica'', common name the commercial top shell, is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.MolluscaBase eds. (2022). MolluscaBase. Rochia nilotica (Linnaeus, 1767). Accessed through: World Register ...

'' (Linnaeus, 1767) * ''Tectus pagodalis'' Montfort, 1810: synonym of ''Tectus mauritianus'' (Gmelin, 1791) * ''Tectus tentorium'' (Gmelin, 1791): synonym of ''

Trochus tentorium ''Trochus tentorium'' is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.MolluscaBase eds. (2022). MolluscaBase. Trochus tentorium Gmelin, 1791. Accessed through: World Register of Marine Species at: https://www.marin ...

'' Gmelin, 1791 * ''Tectus tabidus'' Reeve, L.A., 1861: synonym of ''Tectus pyramis'' (Born, 1778) * ''Tectus virgatus'' (Gmelin, 1791): synonym of ''

Rochia virgata ''Rochia virgata'', common name the striped top shell, is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.MolluscaBase eds. (2022). MolluscaBase. Rochia virgata (Gmelin, 1791). Accessed through: World Register of Mar ...

'' (Gmelin, 1791)

References

* Vaught, K.C. (1989). ''A classification of the living Mollusca''. American Malacologists: Melbourne, FL (USA). . XII, 195 pp * Williams S.T., Karube S. & Ozawa T. (2008) ''Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined''. Zoologica Scripta 37: 483–506

External links

Montfort P. (Denys de). (1808-1810). Conchyliologie systématique et classification méthodique des coquilles. Paris: Schoell. Vol. 1: pp. lxxxvii + 409 [1808]. Vol. 2: pp. 676 + 16

Schumacher, C. F. (1817). Essai d'un nouveau système des habitations des vers testacés. Schultz, Copenghagen. iv + 288 pp., 22 pls.

Swainson, W. (1840). A treatise on malacology or shells and shell-fish. London, Longman. viii + 419 pp
{{Commons category Tegulidae Gastropod genera