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Edestus Skull Drawing
''Edestus'' is an extinct genus of edestoid cartilaginous fish known from the Late Carboniferous ( Pennsylvanian) of the United Kingdom, Russia, and the United States. Most remains consist of isolated curved blades or "whorls" that are studded with teeth, that in life were situated within the jaws. ''Edestus'' is a Greek name derived from the word ''edeste'' (to devour), in reference to the aberrant quality and size of the species' teeth. The largest species, ''E. heinrichi'', has been conservatively estimated to reach greater than 6.7 m (22 ft) in length, around the size of the largest known great white shark. Like its other relatives, such as ''Helicoprion'', and unlike modern sharks, the species of ''Edestus'' grew teeth in curved blades or "whorls". In ''Edestus''' case, only a single row of teeth occurred in the midline of each jaw, leading ''Edestus'' to sometimes be described as the "scissor tooth shark". The degree of curvature in the teeth brackets, along with s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvanian (geology)
The Pennsylvanian ( , also known as Upper Carboniferous or Late Carboniferous) is, in the International Commission on Stratigraphy, ICS geologic timescale, the younger of two period (geology), subperiods (or upper of two system (stratigraphy), subsystems) of the Carboniferous Period. It lasted from roughly . As with most other geochronology, geochronologic units, the stratum, rock beds that define the Pennsylvanian are well identified, but the exact date of the start and end are uncertain by a few hundred thousand years. The Pennsylvanian is named after the U.S. state of Pennsylvania, where the coal-productive beds of this age are widespread. The division between Pennsylvanian and Mississippian (geology), Mississippian comes from North American stratigraphy. In North America, where the early Carboniferous beds are primarily marine limestones, the Pennsylvanian was in the past treated as a full-fledged geologic period between the Mississippian and the Permian. In parts of Europe, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Museum Of Natural History
The American Museum of Natural History (abbreviated as AMNH) is a natural history museum on the Upper West Side of Manhattan in New York City. In Theodore Roosevelt Park, across the street from Central Park, the museum complex comprises 26 interconnected buildings housing 45 permanent exhibition halls, in addition to a planetarium and a library. The museum collections contain over 34 million specimens of plants, animals, fossils, minerals, rocks, meteorites, human remains, and human cultural artifacts, as well as specialized collections for frozen tissue and genomic and astrophysical data, of which only a small fraction can be displayed at any given time. The museum occupies more than . AMNH has a full-time scientific staff of 225, sponsors over 120 special field expeditions each year, and averages about five million visits annually. The AMNH is a private 501(c)(3) organization. Its mission statement is: "To discover, interpret, and disseminate—through scientific research and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annals Of The New York Academy Of Sciences (1887) (18226460190)
The ''Annals of the New York Academy of Sciences'' is an academic journal published by Wiley-Blackwell on behalf of the New York Academy of Sciences. It is one of the oldest science journals still being published, having been founded in 1823. The editor-in-chief is Douglas Braaten. Each issue is of substantial length and explores a single topic with a multidisciplinary approach. A review published on ''Ulrichsweb'' states the scope is enormous and describes the journal as highly respected and the articles as penetrating. Abstracting and indexing The journal is abstracted and indexed in: According to the ''Journal Citation Reports'', the journal has a 2019 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 4.728, ranking it 13th out of 71 journals in the category " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Karpinsky
Alexander Petrovich Karpinsky (russian: Александр Петрович Карпинский, trl. Aljeksandr Pjetrovič Karpinskij; 7 January 1847 ( NS) – 15 July 1936) was a prominent Russian and Soviet geologist and mineralogist, and the president of the Russian Academy of Sciences, and later Academy of Sciences of the USSR, in 1917–1936. Biography Karpinsky was born in Turyinskiye Rudniki, Perm Governorate (now Krasnoturyinsk, Sverdlovsk Oblast), in the Ural Mountains, into a family of mining engineers. From 1857 to 1866 he studied at the mining school in St. Petersburg, and in 1863-1866 he also attended the Mineralogical Institute. From 1866 to 1869 he worked in his home area in the Urals as a mining engineer. He was invited to the Mining Institute, St. Petersburg in 1869 as an Assistant Professor, whilst also doing further studies and research. He was given full professorship in 1877. He stayed there until 1885. He was the imperial director of mining ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kolomna
Kolomna ( rus, Колóмна, p=kɐˈlomnə) is a historical types of inhabited localities in Russia, city in Moscow Oblast, Russia, situated at the confluence of the Moskva River, Moskva and Oka Rivers, (by rail) southeast of Moscow. Population: History Mentioned for the first time in 1177, Kolomna was founded in 1140–1160 according to the latest archaeological surveys. Kolomna's name may originate from the Old East Slavic, Old Russian term for "on the bend (in the river)", especially as the old city is located on a sharp bend in the Moskva River, Moscow River. In 1301, Kolomna became the first town to be incorporated into the Moscow Principality. Like some other ancient Russian cities, it has a Kolomna Kremlin, kremlin, which is a citadel similar to the Moscow Kremlin, more famous one in Moscow and also built of red brick. The stone Kolomna Kremlin was built from 1525–1531 under the Russian Tsar Vasily III. The Kolomna citadel was a part of the Zasechnaya cherta, Great ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East European Platform
East European Platform or Russian Platform is a large and flat area covered by sediments in Eastern Europe spanning from the Ural Mountains to the Tornquist Zone and from the Peri-Caspian Basin to the Barents Sea. Over geological time the platform area has experienced extension, inversion and compression. It has an area of about 6 million km2. The East European Platform sediments can be classified into the following groups: a "protoplatform" of metamorphosed sediments at the bottom, a "quasiplatform" of slightly deformed sediments, a "cataplatform", and a "orthoplatform" at the top. The Mesoproterozoic Jotnian sediments of the Baltic area are examples of a "quasiplatform". The oldest preserved continuous sedimentary cover in the platform date to the Vendian about 650 million years ago. The cycles of deposition of platform sediments are related to the development of nearby orogenies like the Timanide orogeny, the Uralian orogeny, the Hercynian orogeny and the Caledonian orogeny ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moscow Basin
The Moscow Basin is a major sedimentary basin and tectonic structural feature in the stable East European Craton. It has been widely studied by Russian and Scandinavian geologists. Formation and geological history The Fennoscandia Shield and its components, the Russian Platform and Baltic Shield make up a large portion of the East European Craton. Crystalline basement rock formed between 2 billion and 1.65 billion years ago, with most activity ending around 1.75 billion years ago. The rocks were then affected by the Svecofennian orogeny. Some of the oldest sedimentary rocks in the Moscow Basin date to the Late Riphean, in the form of siltstone and limestone. During this period the Moscow Rift formed and East European Craton extension followed earlier compression and inversion. A shallow marine environment appeared in the late Vendian extending into the Early Cambrian. By the late Cambrian, deeper marine conditions developed forming shale and siltstone. Carbonates deposited duri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lehigh, Iowa
Lehigh is a city in Webster County, Iowa, United States. The population was 395 at the time of the 2020 census. Located in a valley, Lehigh is divided in two by the Des Moines River, unusual for such a small town. Originally the two halves of Lehigh were two separate towns. While the town on the west side of the River was always called Lehigh, the east town was called Slabtown, and a piece of history marks the east side's roots––a sign that hangs over the playground with the words "Slabtown Traders," perhaps alluding to the flea market which is held there every summer during Lehigh River Days. The "Slabtown Traders" sign was blown over by a gust of wind in the summer of 2010. It survived several floods while being located on River Street. Lehigh was surrounded by coal mines until the early 20th century and home to a large clay sewer pipe factory until the 1980s. Dolliver State Park, Brushy Creek State Recreation Area and Woodman Hollow State Preserve are located within a few ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USNM
The National Museum of Natural History is a natural history museum administered by the Smithsonian Institution, located on the National Mall in Washington, D.C., United States. It has free admission and is open 364 days a year. In 2021, with 7.1 million visitors, it was the eighteenth most visited museum in the world and the second most visited natural history museum in the world after the Natural History Museum in London."The World's most popular museums", CNN.com, 22 June 2017. Opened in 1910, the museum on the National Mall was one of the first Smithsonian buildings constructed exclusively to hold the national collections and research facilities. The main building has an overall area of with of exhibition and public space and houses over 1,000 employees. The museum's collections contain over 145 million specimens of plants, animals, fossils, minerals, rocks, meteorites, human remains, and human cultural artifacts, the largest natural history collection in the world. It is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oliver Perry Hay
Oliver Perry Hay (May 22, 1846 – November 2, 1930) was an American herpetologist, ichthyologist, and paleontologist. Hay was born in Jefferson County, Indiana, to Robert and Margaret Hay. In 1870, Hay graduated with a bachelor of arts from Eureka College in Illinois. He taught at the college as a sciences professor from 1870–1873. He married Mary E. Howsmon of Eureka, Illinois, in 1870. He was a professor at Oskaloosa College in Iowa from 1874–1876. He was a student at Yale University from 1876–1877. Seventeen years after earning his bachelors, he earned his PhD from Indiana University in Bloomington, Indiana. From 1877–1879, he taught at Abingdon College just before it was incorporated into his alma mater, Eureka College. His longest professorship was at Butler University from 1879–1892. From 1894 to 1895, he worked at the Field Museum of Natural History as assistant curator of zoology, where despite his specialty in ichthyology, he worked in all nonornithological f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staffordshire
Staffordshire (; postal abbreviation Staffs.) is a landlocked county in the West Midlands region of England. It borders Cheshire to the northwest, Derbyshire and Leicestershire to the east, Warwickshire to the southeast, the West Midlands County and Worcestershire to the south and Shropshire to the west. The largest settlement in Staffordshire is Stoke-on-Trent, which is administered as an independent unitary authority, separately from the rest of the county. Lichfield is a cathedral city. Other major settlements include Stafford, Burton upon Trent, Cannock, Newcastle-under-Lyme, Rugeley, Leek, and Tamworth. Other towns include Stone, Cheadle, Uttoxeter, Hednesford, Brewood, Burntwood/Chasetown, Kidsgrove, Eccleshall, Biddulph and the large villages of Penkridge, Wombourne, Perton, Kinver, Codsall, Tutbury, Alrewas, Barton-under-Needwood, Shenstone, Featherstone, Essington, Stretton and Abbots Bromley. Cannock Chase AONB is within the county as well as parts of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Measures
In lithostratigraphy, the coal measures are the coal-bearing part of the Upper Carboniferous System. In the United Kingdom, the Coal Measures Group consists of the Upper Coal Measures Formation, the Middle Coal Measures Formation and the Lower Coal Measures Formation. The group records the deposition of fluvio-deltaic sediments which consists mainly of clastic rocks (claystones, shales, siltstones, sandstones, conglomerates) interstratified with the beds of coal. In most places, the coal measures are underlain by coarser clastic sequences known as Millstone Grit, of Namurian age. The top of the coal measures may be marked by an unconformity, the overlying rocks being Permian or later in age. In some parts of Britain, however, the coal measures grade up into mainly coal-barren red beds of late Westphalian and possibly Stephanian age. Within the Pennine Basin these barren measures are now referred to as the Warwickshire Group, from the district where they achieve their thickest d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
