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Euchondrus Ledereri
''Euchondrus'' is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. Distribution The snails in this genus are of levantine distribution, which includes Cyprus, Turkey, Syria, Israel and Jordan. Shell description The gastropod shell of ''Euchondrus'' is 6.5–13 mm in height in '' Euchondrus parreyssi'', that has very variable size in ''Euchondrus''."Species summary for ''Euchondrus parreyssi''" AnimalBase, last modified 24 February 2009, accessed 7 September 2010. The shell is elongate with 5-7 |
Oskar Boettger
Oskar Boettger (german: Böttger; 31 March 1844 – 25 September 1910) was a German zoologist who was a native of Frankfurt am Main. He was an uncle of the noted malacologist Caesar Rudolf Boettger (1888–1976). From 1863 to 1866 he studied at the Bergakademie Freiberg, then worked for a year in a chemical factory in Frankfurt am Main."Boettger, Oskar" p. 410. In: (1955). '' Neue Deutsche Biographie (NDB). Band 2''. Berlin: Duncker & Humblot. . (in German). In 1869 he received his doctorate from the . The following year (1870), he became a |
Spire (mollusc)
A spire is a part of the coiled shell of molluscs. The spire consists of all of the whorls except for the body whorl. Each spire whorl represents a rotation of 360°. A spire is part of the shell of a snail, a gastropod mollusc, a gastropod shell, and also the whorls of the shell in ammonites, which are fossil shelled cephalopods. In textbook illustrations of gastropod shells, the tradition (with a few exceptions) is to show most shells with the spire uppermost on the page. The spire, when it is not damaged or eroded, includes the protoconch (also called the nuclear whorls or the larval shell), and most of the subsequent teleoconch whorls (also called the postnuclear whorls), which gradually increase in area as they are formed. Thus the spire in most gastropods is pointed, the tip being known as the "apex". The word "spire" is used, in an analogy to a church spire or rock spire, a high, thin, pinnacle. The "spire angle" is the angle, as seen from the apex, at which a spire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euchondrus Limbodentatus
''Euchondrus'' is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. Distribution The snails in this genus are of levantine distribution, which includes Cyprus, Turkey, Syria, Israel and Jordan. Shell description The gastropod shell of ''Euchondrus'' is 6.5–13 mm in height in '' Euchondrus parreyssi'', that has very variable size in ''Euchondrus''."Species summary for ''Euchondrus parreyssi''" AnimalBase, last modified 24 February 2009, accessed 7 September 2010. The shell is elongate with 5-7 |
Euchondrus Ledereri
''Euchondrus'' is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. Distribution The snails in this genus are of levantine distribution, which includes Cyprus, Turkey, Syria, Israel and Jordan. Shell description The gastropod shell of ''Euchondrus'' is 6.5–13 mm in height in '' Euchondrus parreyssi'', that has very variable size in ''Euchondrus''."Species summary for ''Euchondrus parreyssi''" AnimalBase, last modified 24 February 2009, accessed 7 September 2010. The shell is elongate with 5-7 |
Euchondrus Desertorum
''Euchondrus'' is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. Distribution The snails in this genus are of levantine distribution, which includes Cyprus, Turkey, Syria, Israel and Jordan. Shell description The gastropod shell of ''Euchondrus'' is 6.5–13 mm in height in '' Euchondrus parreyssi'', that has very variable size in ''Euchondrus''."Species summary for ''Euchondrus parreyssi''" AnimalBase, last modified 24 February 2009, accessed 7 September 2010. The shell is elongate with 5-7 |
Euchondrus Chondriformis
''Euchondrus'' is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. Distribution The snails in this genus are of levantine distribution, which includes Cyprus, Turkey, Syria, Israel and Jordan. Shell description The gastropod shell of ''Euchondrus'' is 6.5–13 mm in height in '' Euchondrus parreyssi'', that has very variable size in ''Euchondrus''."Species summary for ''Euchondrus parreyssi''" AnimalBase, last modified 24 February 2009, accessed 7 September 2010. The shell is elongate with 5-7 |
Euchondrus Borealis
''Euchondrus'' is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. Distribution The snails in this genus are of levantine distribution, which includes Cyprus, Turkey, Syria, Israel and Jordan. Shell description The gastropod shell of ''Euchondrus'' is 6.5–13 mm in height in '' Euchondrus parreyssi'', that has very variable size in ''Euchondrus''."Species summary for ''Euchondrus parreyssi''" AnimalBase, last modified 24 February 2009, accessed 7 September 2010. The shell is elongate with 5-7 |
Euchondrus Albulus
''Euchondrus'' is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. Distribution The snails in this genus are of levantine distribution, which includes Cyprus, Turkey, Syria, Israel and Jordan. Shell description The gastropod shell of ''Euchondrus'' is 6.5–13 mm in height in '' Euchondrus parreyssi'', that has very variable size in ''Euchondrus''."Species summary for ''Euchondrus parreyssi''" AnimalBase, last modified 24 February 2009, accessed 7 September 2010. The shell is elongate with 5-7 |
Princeton University Press
Princeton University Press is an independent publisher with close connections to Princeton University. Its mission is to disseminate scholarship within academia and society at large. The press was founded by Whitney Darrow, with the financial support of Charles Scribner, as a printing press to serve the Princeton community in 1905. Its distinctive building was constructed in 1911 on William Street in Princeton. Its first book was a new 1912 edition of John Witherspoon's ''Lectures on Moral Philosophy.'' History Princeton University Press was founded in 1905 by a recent Princeton graduate, Whitney Darrow, with financial support from another Princetonian, Charles Scribner II. Darrow and Scribner purchased the equipment and assumed the operations of two already existing local publishers, that of the ''Princeton Alumni Weekly'' and the Princeton Press. The new press printed both local newspapers, university documents, ''The Daily Princetonian'', and later added book publishing to it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weathering
Weathering is the deterioration of rocks, soils and minerals as well as wood and artificial materials through contact with water, atmospheric gases, and biological organisms. Weathering occurs ''in situ'' (on site, with little or no movement), and so is distinct from erosion, which involves the transport of rocks and minerals by agents such as water, ice, snow, wind, waves and gravity. Weathering processes are divided into ''physical'' and ''chemical weathering''. Physical weathering involves the breakdown of rocks and soils through the mechanical effects of heat, water, ice, or other agents. Chemical weathering involves the chemical reaction of water, atmospheric gases, and biologically produced chemicals with rocks and soils. Water is the principal agent behind both physical and chemical weathering, though atmospheric oxygen and carbon dioxide and the activities of biological organisms are also important. Chemical weathering by biological action is also known as biological wea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endolithic
An endolith or endolithic is an organism ( archaeon, bacterium, fungus, lichen, algae or amoeba) that is able to acquire the necessary resources for growth in the inner part of a rock, mineral, coral, animal shells, or in the pores between mineral grains of a rock. Many are extremophiles, living in places long imagined inhospitable to life. The distribution, biomass, and diversity of endolith microorganisms are determined by the physical and chemical properties of the rock substrate, including the mineral composition, permeability, the presence of organic compounds, the structure and distribution of pores, water retention capacity, and the pH. Normally, the endoliths colonize the areas within lithic substrates to withstand intense solar radiation, temperature fluctuations, wind, and desiccation. They are of particular interest to astrobiologists, who theorize that endolithic environments on Mars and other planets constitute potential refugia for extraterrestrial microbial co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
