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Sacabambaspis Janvieri Many Specimens
''Sacabambaspis'' is an extinct genus of jawless fish that lived in the Ordovician period. ''Sacabambaspis'' lived in shallow waters on the continental margins of Gondwana. It is the best known arandaspid with many specimens. It is related to ''Arandaspis''. Description ''Sacabambaspis'' was approximately in length. The body shape of ''Sacabambaspis'' vaguely resembled that of a tadpole with an oversized head, flat body, wriggling tail, and lack of fins. It had characteristic, frontally positioned eyes, like car head lamps. Armor ''Sacabambaspis'' had a head shield made from a large upper (dorsal) plate that rose to a slight ridge in the midline, and a deep curved lower (ventral) plate, this headshield is ornamented with characteristic oak-leaf shaped or tear-drop shaped tubercles. Also it had narrow branchial plates which link these two along the sides, and cover the gill area. The eyes were far forward and between them are possibly two small nostrils and they, which are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dapingian
The Dapingian is the third stage of the Ordovician period and the first stage of the Middle Ordovician series. It is preceded by the Floian and succeeded by the Darriwilian. The top of the Floian is defined as the first appearance of the conodont species ''Baltoniodus triangularis'' which happened about million years ago. The Dapingian lasted for about 2.7 million years until about million years ago.Note: there is an apparent typo in the article referenced; they give the coordinates as "a latitude of 30°51’37.8"N and a longitude of 110°22’26.5"E", but their map and location description better corresponds to 30°51’37.8"N 111°22’26.5"E. History The Ordovician was divided into three series and six global stages in 1995; in 2005, this was amended to seven stages with the formalization of the Hirnantian stage as the last stage in the Late Ordovician. The Dapingian was the last Ordovician stage to be ratified, and was initially referred to as an informal and unnamed "thir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacabamba
Sacabamba ( qu, Saqapampa) is a town in the Cochabamba Department in central Bolivia. It is the capital of Sacabamba Municipality, the fourth municipal section of Esteban Arce Province Esteban Arce is a province in Cochabamba Department, Bolivia. Its capital is Tarata. Many people from the Esteban Arze province (Tarata and Arbieto) have migrated abroad,mainly to Argentina and to the Washington DC area (Arlington county, Fairfa .... At the time of census 2001 it had a population of 636. See also * Jatun Mayu References Instituto Nacional de Estadistica de Bolivia External links Populated places in Cochabamba Department {{CochabambaBO-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest. The continent generally includes twelve sovereign states: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela; two dependent territories: the Falkland Islands and South Georgia and the South Sandwich Islands; and one internal territory: French Guiana. In addition, the ABC islands of the Kingdom of the Netherlands, Ascension Island (dependency of Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory), Bouvet Island ( dependency ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arabian Peninsula
The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plate. At , the Arabian Peninsula is the largest peninsula in the world. Geographically, the Arabian Peninsula includes Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, the United Arab Emirates (UAE), and Yemen, as well as the southern portions of Iraq and Jordan. The largest of these is Saudi Arabia. In the classical era, the southern portions of modern-day Syria, Jordan, and the Sinai Peninsula were also considered parts of Arabia (see Arabia Petraea). The Arabian Peninsula formed as a result of the rifting of the Red Sea between 56 and 23 million years ago, and is bordered by the Red Sea to the west and southwest, the Persian Gulf and the Gulf of Oman to the northeast, the Levant and Mesopotamia to the north and the Arabian Sea and the Indian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oman
Oman ( ; ar, عُمَان ' ), officially the Sultanate of Oman ( ar, سلْطنةُ عُمان ), is an Arabian country located in southwestern Asia. It is situated on the southeastern coast of the Arabian Peninsula, and spans the mouth of the Persian Gulf. Oman shares land borders with Saudi Arabia, the United Arab Emirates, and Yemen, while sharing maritime borders with Iran and Pakistan. The coast is formed by the Arabian Sea on the southeast, and the Gulf of Oman on the northeast. The Madha and Musandam exclaves are surrounded by the United Arab Emirates on their land borders, with the Strait of Hormuz (which it shares with Iran) and the Gulf of Oman forming Musandam's coastal boundaries. Muscat is the nation's capital and largest city. From the 17th century, the Omani Sultanate was an empire, vying with the Portuguese and British empires for influence in the Persian Gulf and Indian Ocean. At its peak in the 19th century, Omani influence and control extended across ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world. It shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a federal state subdivided into twenty-three provinces, and one autonomous city, which is the federal capital and largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over the Falkland Islands, South Georgia and the South Sandwich Islands, and a part of Antarctica. The earliest recorded human presen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Australia
Central Australia, also sometimes referred to as the Red Centre, is an inexactly defined region associated with the geographic centre of Australia. In its narrowest sense it describes a region that is limited to the town of Alice Springs and its immediate surrounds including the MacDonnell Ranges. In its broadest use it can include almost any region in inland Australia that has remained relatively undeveloped, and in this sense is synonymous with the term Outback. Centralia is another term associated with the area, most commonly used by locals. As described by Charles Sturt in one of the earlier uses of the term "A veil hung over Central Australia that could neither be pierced or raised. Girt round about by deserts, it almost appeared as if Nature had intentionally closed it upon civilized man, that she might have one domain on the earth's wide field over which the savage might roam in freedom." In a modern, more formal sense it can refer to the administrative region used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carmichael Sandstone N ...
Carmichael may refer to: * Carmichael (surname) Other * Clan Carmichael, Scottish clan * Carmichael, California, United States * Carmichael coal mine, a proposed mine in Central Queensland, Australia * Carmichael (crater), a lunar crater * Carmichael (manufacturer), Worcester manufacturer of fire engines * Rural Municipality of Carmichael No. 109, a rural municipality in Saskatchewan * Carmichael number, a special kind of number in number theory named for mathematician Robert Carmichael *Carmichael, Saskatchewan, Canada * Carmichael, South Lanarkshire, a village in Scotland * J and C Carmichael, Scottish engineering company * Carmichael College, an educational institution in Rangpur, Bangladesh. See also * Karmichael Hunt Karmichael Neil Matthew Hunt (born 17 November 1986) is a former multi-code international rugby league footballer who last played for the Brisbane Broncos in the NRL. Having played professional rugby league, rugby union and Australian rules ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stokes Siltstone
Stokes may refer to: People * Stokes (surname), a surname (including a list of people with the name) Science * Stokes (unit), a measure of viscosity * Stokes boundary layer * Stokes drift * Stokes flow * Stokes' law * Stokes' law of sound attenuation * Stokes line * Stokes number * Stokes parameters * Stokes radius * Stokes relations * Stokes shift * Stokes stream function * Stokes' theorem * Stokes wave * Campbell–Stokes recorder * Navier–Stokes equations Places Australia * Stokes, Queensland, a locality in the Shire of Carpentaria, Queensland, Australia * Stokes Bay (South Australia), a bay in South Australia * Stokes Bay, South Australia, a locality in South Australia * Stokes National Park, in the Goldfields-Esperance region of Western Australia Canada * Stokes Mountain, a mountain in Nunavut, Canada * Stokes Range, a mountain range in Nunavut, Canada New Zealand * Stokes Valley, a suburb of Lower Hutt in New Zealand ** Stokes Valley RFC, a r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachiopod
Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, while the front can be opened for feeding or closed for protection. Two major categories are traditionally recognized, articulate and inarticulate brachiopods. The word "articulate" is used to describe the tooth-and-groove structures of the valve-hinge which is present in the articulate group, and absent from the inarticulate group. This is the leading diagnostic skeletal feature, by which the two main groups can be readily distinguished as fossils. Articulate brachiopods have toothed hinges and simple, vertically-oriented opening and closing muscles. Conversely, inarticulate brachiopods have weak, untoothed hinges and a more complex system of vertical and oblique (diagonal) muscles used to keep the two valves aligned. In many brachiopods, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anzaldo Formation
The Anzaldo Formation is a Katian geologic formation of central Bolivia. The formation belongs to the Cochabamba Group, overlies the Capinota Formation and is overlain by the San Benito Formation.Anzaldo Formation at .org Fossil content The formation has provided the following fossils:Fish ;Pteraspidomorphi * '' Huemacaspis bistrami''Emig & Herrera, 2006 * '' Sacabambaspis janvieri' ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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