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Pusionella Pseudofusus
''Pusionella'' is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae. Description The fusiform shell is solid, smooth and shining, with numerous whorls. The spire is sharp. The lip lacks an anal sinus. The siphonal canal is short, and exteriorly carinated at the base. The columella is twisted anteriorly. The operculum has a lateral nucleus. The eyes are located at the external bases of the tentacles. Distribution This genus occurs off the western coast of Africa. Species Species within the genus ''Pusionella'' include: * '' Pusionella buccinata'' (Lamarck, 1822) * ''Pusionella compacta'' Strebel, 1914 * '' Pusionella ghanaensis'' Boyer & Ryall, 2006 * '' Pusionella lirata'' Adams A., 1853 * '' Pusionella lupinus'' (Philippi, 1850) * '' Pusionella nifat'' (Bruguiere, 1789) * † '' Pusionella pseudofusus'' (Desmoulins, 1842) (fossil in depositis from the Miocene, Burdigalian, Graves near Bordeaux, France) * '' Pusionella rapulum'' Tryon, 1884 * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pusionella Lirata
''Pusionella lirata'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. This species is also considered a synonym of ''Pusionella milleti milleti'' (Petit de la Saussaye, S., 1851). This has in turn become a synonym of '' Clavatula milleti''. Description The size of an adult shell varies between 15 mm and 55 mm. The shell is whitish, or has a yellowish flesh-color, or brown. It is more or less decussated by longitudinal and revolving engraved lines, sometimes forming granulations especially on the spire. The revolving lines are prominent on the body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ..., where the longitudinal ones are usually subobsolete. George Washington Tryon, Manual of Conchology vol. VI p. 235; 1884 (described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitrella Broderipi
''Mitrella broderipii'' is a species of sea snail in the family Columbellidae The Columbellidae, the dove snails or dove shells, are a family of minute to small sea snails, marine gastropod mollusks in the order Neogastropoda.Bouchet, P.; Gofas, S. (2010). Columbellidae. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) Wo ..., the dove snails. References * Nordsieck, F. (1975). Conchiglie delle Isole Canarie. Parte 2. La Conchiglia. 75-76: 3-7, 22. page(s): 5, 6 External links Sowerby, G. B. I. (1844). Descriptions of some new species of Columbella in the collection of H. Cuming. Proceedings of the Zoological Society of London. 1844: 48-53Monterosato, T. A. di. (1889). Coquilles marines marocaines. Journal de Conchyliologie. 37(1) Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines Naturels. 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavatula Milleti
''Clavatula milleti'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The size of an adult shell varies between 15 mm and 55 mm. The color of the shell is whitish, or yellowish flesh-color, or brown. It is more or less decussated by longitudinal and revolving engraved lines, sometimes forming granulations especially on the spire The revolving lines are prominent on the body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ..., where the longitudinal ones are usually subobsolete. George Washington Tryon, Manual of Conchology vol. VI p. 235; 1884 (described as ''Pusionella milleti'') Distribution This species occurs in the Atlantic Ocean along West Africa ( Senegal) References * Petit de la Saussaye, S. (1851) ''Not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavatula Kraepelini
''Clavatula kraepelini'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The size of an adult shell varies between 25 mm and 37 mm. The shiny shell has a maroon color. Sometimes its borders are whitish, as well as the first whorls are shiny and colorless. The shell contains probably 10 - 11 whorls (as no specimen is complete). These are slightly arched and weakly bulging at the seam. The swollen body whorl is laterally somewhat flattened and is curved to the left from its base. The outermost layer of the shell is covered with a shiny, colorless callus. Distribution This species occurs in the Atlantic Ocean between Senegal and Angola , national_anthem = "Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordina .... References * Bernard, P.A. (Ed.) ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perrona Aculeiformis
''Perrona aculeiformis'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The size of an adult shell varies between 31 mm and 54 mm. The shell is elongated and the mineralized shell is made of calcium carbonate (Chalk). The whorls of the spire are more or less plicately ribbed, sometimes only the upper ones. The body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ... is smooth except at the base, where there are revolving grooves. The color of the shell is very light grayish yellow, or yellowish brown, or chestnut. Some specimens are shouldered varieties and were described as ''Pusionella catelini'' (Petit de la Saussaye, 1851) Distribution This species occurs in the Atlantic Ocean off West Africa and particularl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pusionella Vulpina
''Pusionella vulpina'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The size of an adult shell varies between 25 mm and 46 mm. The shell is stouter than the shell of '' Pusionella aculeiformis''. There are no longitudinal ribs. The upper part of the whorls contains two or three engraved revolving lines, and several more at the base of the body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b .... Otherwise, the shell is smooth and polished, or with microscopic revolving striae. The color of the shell is moderate brown, sometimes yellowish or orange-brown. George Washington Tryon, Manual of Conchology vol. VI pp. 234–235; 1884 Distribution This species occurs in the Atlantic Ocean off Morocco, Senegal, Cameroon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pusionella Valida
''Pusionella valida'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The size of an adult shell varies between 30 mm and 40 mm. The shell is smooth and ponderous. There are 11–12 whorls, flatly rounded, with two or three striae around the upper portion, and several at the base of the body whorl. The color of the shell is light yellowish brown.George Washington Tryon, Manual of Conchology vol. VI p. 234; 1884 Distribution This species occurs in the Pacific Ocean. This ascription is uncertain as this marine species probably occurs from West African to Namibia Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and e ... References Dautzenberg, Ph. - Mission Gruvel sur la còte occidentale d'Afrique; Paris :Masson et cie 1912, p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pusionella Remorata
''Pusionella remorata'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The length of the shell attains 38 mm, its diameter 13 mm. (Original description) The elongate shell is turreted, fairly solid and shining. The color of the shell is pale yellowish-white. The acute protoconch is polished, whitish and smooth. The sculpture consists of 3-4 spirals on the earlier whorls, mainly collected below the sutures. On the body whorl, in addition, about 6 spirals encircle the base, and indications of others are seen between the two series. The second, third, and fourth whorls also show traces of longitudinal sculpture, which appears on the later whorls only as lines of growth. The shell consists of 11½ flat whorls, the last measuring just over half the length of the shell. The aperture is ovate, with a short siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pusionella Rapulum
''Pusionella rapulum'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The oblong shell is ovate The whorls are compressedly gibbous, forming a round shoulder, constricted and with revolving striae towards the base. Otherwise, the shell is smooth, except that the upper whorls of the spire are slightly longitudinally plicate. The color of the shell is whitish, under a very thin, smooth, yellowish brown epidermis. The inside of the aperture is often yellowish brown. There is a heavy, white callous deposit at the upper extremity of the inner margin of the aperture. George Washington Tryon, Manual of Conchology vol. VI, p. 235; 1884 The siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ... is short. Distribution This spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pusionella Pseudofusus
''Pusionella'' is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae. Description The fusiform shell is solid, smooth and shining, with numerous whorls. The spire is sharp. The lip lacks an anal sinus. The siphonal canal is short, and exteriorly carinated at the base. The columella is twisted anteriorly. The operculum has a lateral nucleus. The eyes are located at the external bases of the tentacles. Distribution This genus occurs off the western coast of Africa. Species Species within the genus ''Pusionella'' include: * '' Pusionella buccinata'' (Lamarck, 1822) * ''Pusionella compacta'' Strebel, 1914 * '' Pusionella ghanaensis'' Boyer & Ryall, 2006 * '' Pusionella lirata'' Adams A., 1853 * '' Pusionella lupinus'' (Philippi, 1850) * '' Pusionella nifat'' (Bruguiere, 1789) * † '' Pusionella pseudofusus'' (Desmoulins, 1842) (fossil in depositis from the Miocene, Burdigalian, Graves near Bordeaux, France) * '' Pusionella rapulum'' Tryon, 1884 * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
