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Chengjiang
Chengjiang (; earlier Tchinkiang) is a city located in Yuxi, Yunnan Province, China, just north of Fuxian Lake. Administrative divisions Chengjiang City has 2 subdistricts and 4 townships. ;2 subdistricts * Fenglu () * Longjie () ;4 towns Chengjiang Fossil Site In evolutionary biology, and especially paleontology, Chengjiang is noted for soft-tissue fossil finds, of the Maotianshan Shales, dated less than 518 million years ago during the Cambrian explosion, which "are as spectacular as the Burgess Shale fauna, and significantly older." Also These fossils are considered one of the most important fossil finds of the 20th century. They contain an exquisite degree of detail, cover a diverse range of fauna, and are significant in attempts to understand the evolution of life on Earth. In 2012, the Changjiang Fossil Site became a UNESCO World Heritage Site. The fossils were first discovered by Henri Mansuy and Jaques Deprat who described them in 1912, the year after Charles Walc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chengjiang Fossil
The Maotianshan Shales are a series of Early Cambrian deposits in the Chiungchussu Formation, famous for their '' Konservat Lagerstätten'', deposits known for the exceptional preservation of fossilized organisms or traces. The Maotianshan Shales form one of some forty Cambrian fossil locations worldwide exhibiting exquisite preservation of rarely preserved, non-mineralized soft tissue, comparable to the fossils of the Burgess Shale. They take their name from Maotianshan Hill (, Literal meaning: Hat Sky Mountain) in Chengjiang County, Yunnan Province, China. The most famous assemblage of organisms are referred to as the Chengjiang biota for the multiple scattered fossil sites in Chengjiang. The age of the Chengjiang Lagerstätte is locally termed Qiongzhusian, a stage correlated to the late Atdabanian Stage in Siberian sequences of the middle of the Early Cambrian. The shales date to ≤. The shales also contain the slightly younger Guanshan biota from Malong District in Yu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maotianshan Shales
The Maotianshan Shales are a series of Cambrian, Early Cambrian deposits in the Chiungchussu Formation, famous for their ''Lagerstätte, Konservat Lagerstätten'', deposits known for the exceptional preservation of fossilized organisms or traces. The Maotianshan Shales form one of some forty Cambrian fossil locations worldwide exhibiting exquisite preservation of rarely preserved, non-mineralized soft tissue, comparable to the fossils of the Burgess Shale. They take their name from Maotianshan Hill (, Literal meaning: Hat Sky Mountain) in Chengjiang County, Yunnan Province, China. The most famous assemblage of organisms are referred to as the Chengjiang biota for the multiple scattered fossil sites in Chengjiang. The age of the Chengjiang Lagerstätte is locally termed Qiongzhusian, a stage correlated to the late Atdabanian Stage in Siberian sequences of the middle of the Early Cambrian. The shales date to ≤. The shales also contain the slightly younger Guanshan biota from Mal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yuxi
Yuxi () is a prefecture-level city in the central part of Yunnan province of the People's Republic of China. The administrative center of Yuxi is Hongta District. Yuxi is approximately south of Kunming. Geography Yuxi is located in the center of Yunnan province, about south of Kunming, the provincial capital. Like much of the central and eastern parts of the province, it is part of the Yunnan-Guizhou Plateau. The area is and the population is approximately 2.5 million. Near Yuxi city is Fuxian Lake, the second-deepest freshwater lake in China, where there have been discovered ancient fossils that are now in the possession of the Yuxi museum. There also are three other lakes around the city. They are Xingyun Lake, Qilu Lake, Yangzong Lake. Climate Tempered by the low latitude and moderate elevation, Yuxi has a mild subtropical highland climate (Köppen ''Cwb''), with short, mild, dry winters, and warm, rainy summers. Frost may occur in winter but the days still generally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuxian Lake
Fuxian Lake () stretches out through Chengjiang, Jiangchuan and Huaning Counties in Yunnan Province, spanning an area of 212 square kilometers. The lake is ranked third-largest in Yunnan, after Dian Lake and Erhai Lake. Also the deepest lake in Yunnan, it is 155 meters deep at its greatest depth. It is also the third-deepest fresh water lake in China, after Tianchi and Kanas Lake. Climate Fuxian Lake has humid subtropical climate (Köppen climate classification ''Cwa'') with humid summers and mild dry winters. Flora and fauna Fuxian Lake is known for its unique fauna, including many endemic species. However, its relative isolation makes it vulnerable to biological invasions and pollution. Together with other Yunnan lakes (Dian, Qilu, Yangzong, Xingyun, and Yilong), Fuxian is recognized as an ecoregion. Fuxian is one of three major Yunnan lakes with a high number of endemics, the others being Dian (Dianchi) and Erhai.Wang, Wang, Li, Du, Yang, Lassoie, and Hassan (2013). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
County-level City
A county-level municipality (), county-level city or county city, formerly known as prefecture-controlled city (1949–1970: ; 1970–1983: ), is a Administrative divisions of China#County level (3rd), county-level administrative division of the China, People's Republic of China. County-level cities have judiciary, judicial but no legislature, legislative rights over their own local ordinance, local law and are usually governed by Administrative divisions of China#Prefectural level (2nd), prefecture-level divisions, but a few are governed directly by Administrative divisions of China#Provincial level (1st), province-level divisions. A county-level city is a "city" () and "county" () that have been merged into one unified jurisdiction. As such it is simultaneously a city, which is a municipal entity and a county which is an administrative division of a prefecture. Most county-level cities were created in the 1980s and 1990s by replacing denser populated Counties of Chin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagerstätte
A Lagerstätte (, from ''Lager'' 'storage, lair' '' Stätte'' 'place'; plural ''Lagerstätten'') is a sedimentary deposit that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues. These formations may have resulted from carcass burial in an anoxic environment with minimal bacteria, thus delaying the decomposition of both gross and fine biological features until long after a durable impression was created in the surrounding matrix. ''Lagerstätten'' span geological time from the Neoproterozoic era to the present. Worldwide, some of the best examples of near-perfect fossilization are the Cambrian Maotianshan shales and Burgess Shale, the Silurian Waukesha Biota, the Devonian Hunsrück Slates and Gogo Formation, the Carboniferous Mazon Creek, the Jurassic Posidonia Shale and Solnhofen Limestone, the Cretaceous Yixian, Santana, and Agua Nueva formations, the Eocene Green River Formation, the Miocene Foulden Maar and Ashfall F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yunnan University
Yunnan University (, Acronym: YNU) is a national key university in Yunnan Province, China. Its main campuses are located in the provincial capital city of Kunming. Founded in December 1922, Yunnan University started to enroll in April 1923. It began as a privately run institution called the "University of the Eastern Land" and its name has changed six times since then. Currently, Yunnan University is one of the Double First-Class Universities and former "Project 211" universities in China authorized by the central government to be specially developed. Yunnan University has also been included on the list of the key national universities for the "China Western Development" program. YNU is gained a worldwide reputation through the discovery and research of the Maotianshan Shales (especially the Chengjiang biota) in early Cambrian leader by professor , who was rewarded the first class of in 2003. As of 2022, the Best Chinese Universities Ranking ranked Yunnan University the best in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambrian Explosion
The Cambrian explosion, Cambrian radiation, Cambrian diversification, or the Biological Big Bang refers to an interval of time approximately in the Cambrian Period when practically all major animal phyla started appearing in the fossil record. It lasted for about 13 – 25 million years and resulted in the divergence of most modern metazoan phyla. The event was accompanied by major diversification in other groups of organisms as well. Before early Cambrian diversification, most organisms were relatively simple, composed of individual cells, or small multicellular organisms, occasionally organized into colonies. As the rate of diversification subsequently accelerated, the variety of life became much more complex, and began to resemble that of today. Almost all present-day animal phyla appeared during this period, including the earliest chordates. A 2019 paper suggests that the timing should be expanded back to include the late Ediacaran, rather than just the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phosphate
In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid . The phosphate or orthophosphate ion is derived from phosphoric acid by the removal of three protons . Removal of one or two protons gives the dihydrogen phosphate ion and the hydrogen phosphate ion ion, respectively. These names are also used for salts of those anions, such as ammonium dihydrogen phosphate and trisodium phosphate. File:3-phosphoric-acid-3D-balls.png, Phosphoricacid File:2-dihydrogenphosphate-3D-balls.png, Dihydrogenphosphate File:1-hydrogenphosphate-3D-balls.png, Hydrogenphosphate File:0-phosphate-3D-balls.png, Phosphate In organic chemistry, phosphate or orthophosphate is an organophosphate, an ester of orthophosphoric acid of the form where one or more hydrogen atoms are replaced by organic groups. An example is trimethyl phosphate, . The term also refers to the triv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Academy Of Sciences
The Chinese Academy of Sciences (CAS); ), known by Academia Sinica in English until the 1980s, is the national academy of the People's Republic of China for natural sciences. It has historical origins in the Academia Sinica during the Republican era and was formerly also known by that name. Collectively known as the "Two Academies (两院)" along with the Chinese Academy of Engineering, it functions as the national scientific think tank and academic governing body, providing advisory and appraisal services on issues stemming from the national economy, social development, and science and technology progress. It is headquartered in Xicheng District, Beijing, with branch institutes all over mainland China. It has also created hundreds of commercial enterprises, Lenovo being one of the most famous. CAS is the world's largest research organization. It had 60,000 researchers in 2018 and 114 institutes in 2016, and has been consistently ranked among the top research organizations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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