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Ikechosaurus
''Ikechosaurus'' is an extinct genus of choristodere reptile which existed in China and Mongolia during the Early Cretaceous. It contains the species ''Ikechosaurus sunailinae'' and ''Ikechosaurus gaoi''. It belongs to the crocodilian-like clade Neochoristodera and was initially assigned to the Champsosauridae Neochoristodera is a lineage of specialised crocodile-like fully aquatic choristodere reptiles. Noted for their long jaws and large size, these animals were predominant across the Northern Hemisphere, occurring in freshwater and coastal environme ... by Sigogneau-Russell (1981). Compared to other neochoristoderes, ''Ikechosaurus'' has a rather simple dentition, lacking the speciations seen in latter species. It also has parasphenoid palatal teeth, a feature not seen in any other choristodere. References Choristodera Cretaceous reptiles of Asia Cretaceous choristoderes Prehistoric reptile genera Fossil taxa described in 1981 {{Cretaceous-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ikechosaurus Sp
''Ikechosaurus'' is an extinct genus of choristodere reptile which existed in China and Mongolia during the Early Cretaceous. It contains the species ''Ikechosaurus sunailinae'' and ''Ikechosaurus gaoi''. It belongs to the crocodilian-like clade Neochoristodera and was initially assigned to the Champsosauridae Neochoristodera is a lineage of specialised crocodile-like fully aquatic choristodere reptiles. Noted for their long jaws and large size, these animals were predominant across the Northern Hemisphere, occurring in freshwater and coastal environme ... by Sigogneau-Russell (1981). Compared to other neochoristoderes, ''Ikechosaurus'' has a rather simple dentition, lacking the speciations seen in latter species. It also has parasphenoid palatal teeth, a feature not seen in any other choristodere. References Choristodera Cretaceous reptiles of Asia Cretaceous choristoderes Prehistoric reptile genera Fossil taxa described in 1981 {{Cretaceous-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choristodera
Choristodera (from the Greek χωριστός ''chōristos'' + δέρη ''dérē'', 'separated neck') is an extinct order of semiaquatic diapsid reptiles that ranged from the Middle Jurassic, or possibly Triassic, to the late Miocene (168 to 11.6 million years ago). Choristoderes are morphologically diverse, with the best known members being the crocodile-like neochoristoderes such as ''Champsosaurus''. Other choristoderans had lizard-like or long necked morphologies. Choristoderes appear to have been confined to the Northern Hemisphere, having been found in North America, Asia, and Europe, and possibly also North Africa. Choristoderes are generally thought to be derived neodiapsids that are close relatives or members of Sauria. History of Discovery Choristodera was erected in 1876, originally as a suborder of Rhynchocephalia by Edward Drinker Cope to contain ''Champsosaurus,'' which was described from Late Cretaceous strata of Montana by Cope in the same paper. A year late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choristodera
Choristodera (from the Greek χωριστός ''chōristos'' + δέρη ''dérē'', 'separated neck') is an extinct order of semiaquatic diapsid reptiles that ranged from the Middle Jurassic, or possibly Triassic, to the late Miocene (168 to 11.6 million years ago). Choristoderes are morphologically diverse, with the best known members being the crocodile-like neochoristoderes such as ''Champsosaurus''. Other choristoderans had lizard-like or long necked morphologies. Choristoderes appear to have been confined to the Northern Hemisphere, having been found in North America, Asia, and Europe, and possibly also North Africa. Choristoderes are generally thought to be derived neodiapsids that are close relatives or members of Sauria. History of Discovery Choristodera was erected in 1876, originally as a suborder of Rhynchocephalia by Edward Drinker Cope to contain ''Champsosaurus,'' which was described from Late Cretaceous strata of Montana by Cope in the same paper. A year late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neochoristodera
Neochoristodera is a lineage of specialised crocodile-like fully aquatic choristodere reptiles. Noted for their long jaws and large size, these animals were predominant across the Northern Hemisphere, occurring in freshwater and coastal environments across the Cretaceous and early Cenozoic. Systematics Neochoristoderes form a monophyletic group, however there is no consensus about the relationships of the genera, which have been recovered as a polytomy in recent studies. Neochoristodera contains the named genera ''Champsosaurus'', '' Ikechosaurus'', ''Kosmodraco'', ''Liaoxisaurus'', '' Mengshanosaurus'', ''Simoedosaurus'' and ''Tchoiria''. Various taxa of uncertain affinities within this group are known, including a partial femur of a choristodere, possibly of a neochoristodere from the Cedar Mountain Formation of the United States and an indeterminate partial skeleton from the Kuwajima Formation of Japan. Evolution Neochoristoderes first appear in the Early Cretaceous of Asia, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Champsosauridae
Neochoristodera is a lineage of specialised crocodile-like fully aquatic choristodere reptiles. Noted for their long jaws and large size, these animals were predominant across the Northern Hemisphere, occurring in freshwater and coastal environments across the Cretaceous and early Cenozoic. Systematics Neochoristoderes form a monophyletic group, however there is no consensus about the relationships of the genera, which have been recovered as a polytomy in recent studies. Neochoristodera contains the named genera ''Champsosaurus'', ''Ikechosaurus'', ''Kosmodraco'', ''Liaoxisaurus'', ''Mengshanosaurus'', ''Simoedosaurus'' and ''Tchoiria''. Various taxa of uncertain affinities within this group are known, including a partial femur of a choristodere, possibly of a neochoristodere from the Cedar Mountain Formation of the United States and an indeterminate partial skeleton from the Kuwajima Formation of Japan. Evolution Neochoristoderes first appear in the Early Cretaceous of Asia, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beijing Museum Of Natural History
The Beijing Museum of Natural History (BMNH; ) is located at 126 Tian Qiao Nan Street, Dongcheng District, Beijing, 100050, and is the most popular natural history museum in China. It was founded in 1951 as the National Central Museum of Natural History, and its name was changed to the ''Beijing Museum of Natural History'' in 1962. The BMNH is the first large scale natural history museum created in China.BMNH website The BMNH has total floor space of 24,000 square meters, of which 8,000 square meters are available for display and owns more than 200,000 specimens. The major display area is the Tian Jiabing Building. The collections include |
Denise Sigogneau-Russell
Denise Sigogneau-Russell (born ''c.'' 1941/42) is a French palaeontologist who specialises in mammals from the Mesozoic, particularly from France and the UK. She is currently based at the Muséum National d'Histoire Naturelle. Background Denise Sigogneau-Russell completed her PhD in 1969 on therapsids - the forerunners of mammals - from South Africa, where she spent two years. In 1976 a Belgian amateur fossil hunter brought her a mammal tooth from a quarry in eastern France, and this inspired her to change direction and begin research on mammals from the Mesozoic.Kielan-Jaworowska, Z. 2013. ''In Pursuit of Early Mammals''. Indiana University Press. She subsequently studied them in France, Portugal, Madagascar, Morocco, and England. Zofia Kielan-Jaworowska said that due to Sigogneau-Russell's "scholarship and diligence, she has contributed enormously to the knowledge of early mammal evolution.". She was married to Donald E. Russell, also a palaeontologist specialising in mammals, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and borders fourteen countries by land, the most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third largest country by total land area. The country consists of 22 provinces, five autonomous regions, four municipalities, and two Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the most populous city and financial center is Shanghai. Modern Chinese trace their origins to a cradle of civilization in the fertile basin of the Yellow River in the North China Plain. The semi-legendary Xia dynasty in the 21st century BCE and the well-attested Shang and Zhou dynasties developed a bureaucratic political system to serve hereditary monarchies, or dyna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongolia
Mongolia; Mongolian script: , , ; lit. "Mongol Nation" or "State of Mongolia" () is a landlocked country in East Asia, bordered by Russia to the north and China to the south. It covers an area of , with a population of just 3.3 million, making it the world's most sparsely populated sovereign nation. Mongolia is the world's largest landlocked country that does not border a closed sea, and much of its area is covered by grassy steppe, with mountains to the north and west and the Gobi Desert to the south. Ulaanbaatar, the capital and largest city, is home to roughly half of the country's population. The territory of modern-day Mongolia has been ruled by various nomadic empires, including the Xiongnu, the Xianbei, the Rouran, the First Turkic Khaganate, and others. In 1206, Genghis Khan founded the Mongol Empire, which became the largest contiguous land empire in history. His grandson Kublai Khan conquered China proper and established the Yuan dynasty. After the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Cretaceous
The Early Cretaceous ( geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Proposals for the exact age of the Barremian-Aptian boundary ranged from 126 to 117 Ma until recently (as of 2019), but based on drillholes in Svalbard the defining early Aptian Oceanic Anoxic Event 1a (OAE1a) was carbon isotope dated to 123.1±0.3 Ma, limiting the possible range for the boundary to c. 122–121 Ma. There is a possible link between this anoxic event and a series of Early Cretaceous large igneous provinces (LIP). The Ontong Java-Manihiki-Hikurangi large igneous province, emplaced in the South Pacific at c. 120 Ma, is by far the largest LIP in Earth's history. The Ontong Java Plateau today covers an area of 1,860,000 km2. In the Indian Ocean another LIP began to form at c. 120 Ma, the Kerguelen P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Science Bulletin
''Science Bulletin'' () is a multidisciplinary scientific journal co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. It is published by Elsevier on behalf of Science in China Press and focuses on research in various fields of the natural sciences. Since 2011, its articles have been published open access under the Creative Commons by Attribution license, but since 2014, only some of its articles may be published under the Creative Commons by Attribution license. According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as i ... of 11.78. References External links * English-language journals Multidisciplinary scientific journals Chinese Academy of Scienc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Reptiles Of Asia
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now- extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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