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Anostoma Octodentatum
''Anostoma octodentatum'', common name Brazilian up-mouth snail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Odontostomidae. ''Anostoma octodentatum'' is the type species of the genus '' Anostoma''. The type locality is tropical South America, east of the Andes. Pilsbry H. A. 1901. in Tryon G. W. & Pilsbry H. A. 1901-1902 ''Oriental Bulimoid Helicidae. Odontostominae. Cerionidae'' Volume 14 Manual of Conchology. Second series: Pulmonata. page 109-111. Subspecies * ''Anostoma octodentatum verreauxianum'' Hupé, 1857photo Distribution and habitat This species occurs in Brazil in the states of Ceará and Amapá, where it is found uncommonly, living on the ground. accessed 19 February 2009 Shell description The shell of this species is biconvex. The height of the shell is half or nearly half of the greatest diameter. The shell is solid, and obtusely angular at the periphery. The shell color is a brown-tinted whitish; th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fischer Von Waldheim
Gotthelf Fischer von Waldheim (russian: Григо́рий Ива́нович Фи́шер фон Ва́льдгейм, translit=Grigórij Ivánovič Fíšer fon Vál'dgejm; 13 October 1771 – 18 October 1853) was a Saxon anatomist, entomologist and paleontologist. Fischer was born as Gotthilf Fischer in Waldheim, Saxony, the son of a linen weaver. He studied medicine at Leipzig. He travelled to Vienna and Paris with his friend Alexander von Humboldt and studied under Georges Cuvier. He took up a professorship at Mainz, and then in 1804 became Professor of Natural History and Director of the Demidov Natural History Museum at the Moscow University. In August 1805 he founded the Société Impériale des Naturalistes de Moscou. Fischer was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1812 and a member of the American Philosophical Society in 1818. Fischer was mainly engaged in the classification of invertebrates, the result of which was hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Augustus Pilsbry
Henry Augustus Pilsbry (7 December 1862 – 26 October 1957) was an American biologist, malacologist and carcinologist, among other areas of study. He was a dominant presence in many fields of invertebrate taxonomy for the better part of a century. For much of his career, his authority with respect to the classification of certain substantial groups of organisms was unchallenged: barnacles, chitons, North American terrestrial molluscs, terrestrial mollusks, and others. Biography Pilsbry (frequently misspelled ''Pilsbury'') spent his childhood and youth in Iowa. He was called "Harry" Pilsbry then, and developed an early fascination with the limited variety of mollusks he was able to find. He attended the University of Iowa, and received the Bachelor of Science degree there in 1882, but did not immediately find employment in his field of interest. Instead, Henry Pilsbry worked for publishing firms and newspapers for the next several years, but devoted most of his spare time to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc. The term ''aperture'' is used for the main opening in gastropod shells, scaphopod shells, and also for ''Nautilus'' and ammonite shells. The word is not used to describe bivalve shells, where a natural opening between the two shell valves in the closed position is usually called a ''gape''. Scaphopod shells are tubular, and thus they have two openings: a main anterior aperture and a smaller posterior aperture. As well as the aperture, some gastropod shells have additional openings in their shells for respiration; this is the case in some Fissurellidae (keyhole limpets) where the central smaller opening at the apex of the shell is called an orifice, and in the Haliotidae (abalones) where the row of respiratory openings in the shell are also called orifices. In gastropods In some prosobranch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whorl (mollusc)
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in numerous gastropods, but it is also found in shelled cephalopods including ''Nautilus'', ''Spirula'' and the large extinct subclass of cephalopods known as the ammonites. A spiral shell can be visualized as consisting of a long conical tube, the growth of which is coiled into an overall helical or planispiral shape, for reasons of both strength and compactness. The number of whorls which exist in an adult shell of a particular species depends on mathematical factors in the geometric growth, as described in D'Arcy Wentworth Thompson's classic 1917 book ''On Growth and Form'', and by David Raup. The main factor is how rapidly the conical tube expands (or flares-out) over time. When the rate of expansion is low, such that each subsequent whorl is not that much wider than the previous one, then the adult shell has numerous whorls. When the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a Gastropoda, gastropod or snail, 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 storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naturalis Biodiversity Center - ZMA
Naturalis Biodiversity Center ( nl, Nederlands Centrum voor Biodiversiteit Naturalis) is a national museum of natural history and a research center on biodiversity in Leiden, Netherlands. It was named the European Museum of the Year 2021. Although its current name and organization are relatively recent, the history of Naturalis can be traced back to the early 1800s. Its collection includes approximately 42 million specimens, making it one of the largest natural history collections in the world. History The beginnings of Naturalis go back to the creation of the Rijksmuseum van Natuurlijke Historie (abbreviated RMNH, National Museum of Natural History) by Dutch King William I on August 9, 1820. In 1878, the geological and mineralogical collections of the museum were split off into a separate museum, remaining distinct until the merger of the Rijksmuseum van Natuurlijke Historie with the Rijksmuseum van Geologie en Mineralogie (abbreviated RGM) in 1984, to form the Nationaal Natu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amapá
Amapá () is one of the 26 states of Brazil. It is in the northern region of Brazil. It is the second least populous state and the eighteenth largest by area. Located in the far northern part of the country, Amapá is bordered clockwise by French Guiana to the north, the Atlantic Ocean to the east, Pará to the south and west, and Suriname to the northwest. The capital and largest city is Macapá. The state has 0.4% of the Brazilian population and is responsible for only 0.22% of the Brazilian GDP. In the colonial period the region was called Portuguese Guiana and was part of Portuguese Empire, Portugal's State of Brazil. Later, the region was distinguished from the other The Guianas, Guianas. Amapá was once part of Pará, but became a separate territory in 1943, and a state in 1990. The dominant feature of the region, and 90 percent of its total area, is the Amazon Rainforest. Unexplored forests occupy 70 percent of Amapá, and Tumucumaque Mountains National Park, establish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceará
Ceará (, pronounced locally as or ) is one of the 26 states of Brazil, located in the northeastern part of the country, on the Atlantic coast. It is the eighth-largest Brazilian State by population and the 17th by area. It is also one of the main tourist destinations in Brazil. The state capital is the city of Fortaleza, the country's fourth most populous city. The state has 4.3% of the Brazilian population and produces 2.1% of the Brazilian GDP. Literally, the name ''Ceará'' means "sings the jandaia". According to José de Alencar, one of the most important writers of Brazil and an authority in Tupi Guaraní, ''Ceará'' means turquoise or green waters. The state is best known for its extensive coastline, with of sand. There are also mountains and valleys producing tropical fruits. To the south, on the border of Paraíba, Pernambuco and Piauí, is the National Forest of Araripe. Geography Ceará has an area of . It is bounded on the north by the Atlantic Ocean, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Brazil
The non-marine molluscs of Brazil are a part of the molluscan fauna of Brazil. There are at least 1,074Simone, L. R. L. 2006. ''Land and Freshwater Molluscs of Brazil''. EGB, Fapesp. São Paulo, Brazil. 390 pp. .book review) native nominal species of non-marine molluscs living in Brazil. There are at least 956 nominal species of gastropods, which breaks down to about 250 species of freshwater gastropods, and about 700 species of land gastropods (590 species of snails and approximately 110(?) species of slugs), plus at least 117 species of bivalves living in the wild. There are at least 373 species of freshwater molluscs in Brazil. The number of native species is at least 1,074 and the number of non-indigenous molluscs in Brazil is, at minimum, 32 species. The most serious invasive alien species in Paraná State are the land snail ''Achatina fulica'' and the freshwater snail ''Melanoides tuberculata''. In Rio Grande do Sul, 201 species and subspecies of non-marine mollusks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Washington Tryon
George Washington Tryon Jr. (20 May 1838 – 5 February 1888) was an American malacologist who worked at the Academy of Natural Sciences in Philadelphia. Biography George Washington Tryon was the son of Edward K. Tryon and Adeline Savidt. In 1853 he attended the Friends Central School in Philadelphia. In 1859, Tryon became a member of the Academy of Natural Sciences of Philadelphia. He was largely responsible for the construction of new buildings for the Academy, especially, in 1866, a section for malacology. In 1869 he became the conservator in this malacological section. In 1865, together with a group of American malacologists, he founded (and financed) the American Journal of Conchology. This ended in 1872. In 1879 he started the ''Manual of Conchology; structural and systematic; with illustrations of the species'', volume 1, series 1. When he died, nine volumes of the first series had been published. From 1887 until 1888, his assistant was Henry Augustus Pilsbry. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anostoma
''Anostoma'', common name the up-mouth snails, is a genus of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Odontostomidae.Breure A. S. H. & Ablett J. D. (2012) "Annotated type catalogue of the Bothriembryontidae and Odontostomidae (Mollusca, Gastropoda, Orthalicoidea) in the Natural History Museum, London". ''ZooKeys'' 182: 1-70. . Snails in this genus are found in Brazil. Adult snails in this genus have an extremely unusual shell morphology: the aperture of the adult shell faces directly "upwards", in other words, in the same direction as the spire. This seemingly impossible arrangement is made possible because the adult shell is carried upside down. In 1901, the American malacologist Henry Augustus Pilsbry commented that the adult shell of ''Anostoma'' is "so bizarre that in the total absence of information upon its life history, no useful theory can be formulated to account for its peculiarities." A very similar shell is found in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Fischer Von Waldheim
Gotthelf Fischer von Waldheim (russian: Григо́рий Ива́нович Фи́шер фон Ва́льдгейм, translit=Grigórij Ivánovič Fíšer fon Vál'dgejm; 13 October 1771 – 18 October 1853) was a Saxon anatomist, entomologist and paleontologist. Fischer was born as Gotthilf Fischer in Waldheim, Saxony, Waldheim, Saxony, the son of a linen weaver. He studied medicine at Leipzig. He travelled to Vienna and Paris with his friend Alexander von Humboldt and studied under Georges Cuvier. He took up a professorship at Mainz, and then in 1804 became Professor of Natural History and Director of the Demidov Natural History Museum at the Moscow State University, Moscow University. In August 1805 he founded the Société Impériale des Naturalistes de Moscou. Fischer was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1812 and a member of the American Philosophical Society in 1818. Fischer was mainly engaged in the classification of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
