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Ginkgo Cranei
''Ginkgo cranei'' is an extinct ''Ginkgo'' species in the family Ginkgoaceae described from a series of isolated fossil ovulate organs and leaves. The species is known from upper Paleocene sediments exposed in the state of North Dakota, USA. It is the first ''Ginkgo'' species to be described from Paleogene period with reproductive structures. History and classification ''Ginkgo cranei'' is represented by a group of fossil specimens from the Upper Paleocene aged Sentinel Butte Formation exposed near the town of Almont, North Dakota. The specimens are preserved in a fine-grained yellow- to brown-colored shale with a notably high iron content. Fossils found in the shales are often three-dimensionally preserved with stem and seed structure intact. The age of the formation is based on the recovery of late Tiffanian mammals in the upper section of the formation along with the floral and palynological assemblages of the formation. Many of the ''G. cranei'' seeds are preserved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ginkgo
''Ginkgo'' is a genus of non-flowering seed plants. The scientific name is also used as the English name. The order to which it belongs, Ginkgoales, first appeared in the Permian, 270 million years ago, and is now the only living genus within the order. The rate of evolution within the genus has been slow, and almost all its species had become extinct by the end of the Pliocene. The sole surviving species, '' Ginkgo biloba'' is only found in the wild in China, but is cultivated around the world. The relationships between ginkgos and other groups of plants are not fully resolved. Prehistory The ginkgo (''Ginkgo biloba'') is a living fossil, with fossils similar to the modern plant dating back to the Permian, 270 million years ago. The closest living relatives of the clade are the cycads, which share with the extant ''G. biloba'' the characteristic of motile sperm. The ginkgo and cycad lineages are thought to have an extremely ancient divergence dating to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleobotany
Paleobotany, which is also spelled as palaeobotany, is the branch of botany dealing with the recovery and identification of plant remains from geological contexts, and their use for the biological reconstruction of past environments (paleogeography), and the evolutionary history of plants, with a bearing upon the evolution of life in general. A synonym is paleophytology. It is a component of paleontology and paleobiology. The prefix ''palaeo-'' means "ancient, old", and is derived from the Greek adjective , . Paleobotany includes the study of terrestrial plant fossils, as well as the study of prehistoric marine photoautotrophs, such as photosynthetic algae, seaweeds or kelp. A closely related field is palynology, which is the study of fossilized and extant spores and pollen. Paleobotany is important in the reconstruction of ancient ecological systems and climate, known as paleoecology and paleoclimatology respectively; and is fundamental to the study of green ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Crane
Sir Peter Crane, FRS (born 18 July 1954) is the current President of the Oak Spring Garden Foundation and Senior Research Scientist in the School of Forestry and Environmental Studies at Yale University. In addition to his work in leading and developing educational and natural history organizations, including the Field Museum in Chicago and the Royal Botanic Gardens, Kew, he has had a long career as a professor and researcher in both the U.K. and the United States. He is best known for his work on the origin and early evolution of flowering plants (angiosperms) based on studies of the plant fossil record. His popular writing includes ''Ginkgo: The Tree That Time Forgot'', a book that traces the evolution and cultural history of ''Ginkgo biloba'' to the present day. Personal life and education Peter Crane was born in Kettering, Northamptonshire in the United Kingdom. He attended Kettering Grammar School where he developed a strong interest in local history and archaeology as w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Journal Of Plant Sciences
The ''International Journal of Plant Sciences'' covers botanical research including genetics and genomics, developmental and cell biology, biochemistry and physiology, morphology and structure, systematics, plant-microbe interactions, paleobotany, evolution, and ecology. The journal also regularly publishes important symposium proceedings. It is published by the University of Chicago Press. From 1875 to 1876 it was known as the ''Botanical Bulletin'' and from 1876 to 1991 as the ''Botanical Gazette''. The first issue titled ''The International Journal of Plants Sciences'' was dated March 1992 (volume 53, number 1). For the years 1992 and 1993, the journal was published quarterly. The journal was founded by brothers John Merle Coulter and Stanley Coulter. John brought the journal to the University of Chicago when he started the Department of Botany. References External links * * International Journal of Plant Sciencesat SCImago Journal Rank Botanical Gazette / International ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is alm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Tennessee State University
East Tennessee State University (ETSU) is a public research university in Johnson City, Tennessee. Although it is part of the State University and Community College System of Tennessee, the university is governed by an institutional Board of Trustees. , it is the fourth largest university in the state and has off-campus centers in nearby Kingsport, Elizabethton, and Sevierville. ETSU is classified among "R2: Doctoral Universities – High research activity." It hosts the James H. Quillen College of Medicine which is often ranked as one of the top schools in the United States for rural medicine and primary care education; the Bill Gatton College of Pharmacy, the College of Nursing, the College of Public Health, and the recently formed College of Clinical and Rehabilitative Health Sciences. Unique programs include an accredited program in Bluegrass, Old Time, and Country Music, America's lone master's degree in Storytelling, and the Appalachian Studies programs, focused on the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jilin University
Jilin University (JLU; ; often abbreviated JLU or ) is a leading national research university located in Changchun, China. It is under the direct jurisdiction of China's Ministry of Education. It is a Chinese Ministry of Education Class A Double First Class University. It is strongly supported by state key projects such as Double First Class University Plan, former Project 985, Project 211 and Project 2011. Jilin University is consistently ranked as one of the most prestigious universities in China, and has research projects in automobile engineering, chemistry, computer science, electrical engineering and biology be identified as internationally renowned. In 2017, the university is supported to achieve Class A "world-class" academic status under the Double First Class University Plan by China. JLU's alumni include the Vice Premier of the People's Republic of China Liu Yandong. History Founded in 1946 as the Northeast College of Administration in Harbin, Heilongjiang, J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanjing University
Nanjing University (NJU; ) is a national public research university in Nanjing, Jiangsu. It is a member of C9 League and a Class A Double First Class University designated by the Chinese central government. NJU has two main campuses: the Xianlin campus in the northeast of Nanjing, and the Gulou campus in the city center of Nanjing. Established in 1902 as Sanjiang Normal School, Nanjing University underwent a number of name changes, such as Nanjing Higher Normal School, National Southeastern University and National Central University, until it was renamed Nanjing University in 1950. It merged with the University of Nanking in 1952. NJU is perennially ranked one of the best research universities in China, and one of the most selective universities in the nation. As of 2022, Nanjing University ranked 7th in China and 95th globally by Times Higher Education World University Rankings. Regarding scientific research output, the Nature Index Annual Table 2022 ranked Nanjing Univer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleobotanist
Paleobotany, which is also spelled as palaeobotany, is the branch of botany dealing with the recovery and identification of plant remains from geological contexts, and their use for the biological reconstruction of past environments (paleogeography), and the evolutionary history of plants, with a bearing upon the evolution of life in general. A synonym is paleophytology. It is a component of paleontology and paleobiology. The prefix ''palaeo-'' means "ancient, old", and is derived from the Greek adjective , . Paleobotany includes the study of terrestrial plant fossils, as well as the study of prehistoric marine photoautotrophs, such as photosynthetic algae, seaweeds or kelp. A closely related field is palynology, which is the study of fossilized and extant spores and pollen. Paleobotany is important in the reconstruction of ancient ecological systems and climate, known as paleoecology and paleoclimatology respectively; and is fundamental to the study of green plant developm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago, Illinois
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_type2 = Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook and DuPage , established_title = Settled , established_date = , established_title2 = Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council , governing_body = Chicago City Council , leader_title = Mayor , leader_name = Lori Lightfoot ( D) , leader_title1 = City Clerk , leader_name1 = Anna Valencia ( D) , unit_pref = Imperial , area_footnotes = , ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Field Museum Of Natural History
The Field Museum of Natural History (FMNH), also known as The Field Museum, is a natural history museum in Chicago, Illinois, and is one of the largest such museums in the world. The museum is popular for the size and quality of its educational and scientific programs, and its extensive scientific-specimen and artifact collections. The permanent exhibitions, which attract up to two million visitors annually, include fossils, current cultures from around the world, and interactive programming demonstrating today's urgent conservation needs. The museum is named in honor of its first major benefactor, Marshall Field, the department-store magnate. The museum and its collections originated from the 1893 World's Columbian Exposition and the artifacts displayed at the fair. The museum maintains a temporary exhibition program of traveling shows as well as in-house produced topical exhibitions. The professional staff maintains collections of over 24 million specimens and objects t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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