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Presbyornis Enhancement
''Presbyornis'' is an extinct genus of anseriform bird. It contains two unequivocally accepted species; the well-known ''P. pervetus'' and the much lesser-known ''P. isoni''. ''P. pervetus'' was approximately the size and shape of a goose, but with longer legs; ''P. isoni'', known from a few bones, was much larger, more than swan-sized. Other fossils, more doubtfully assigned to this genus, are also known. Fossils The fossil record of ''P. pervetus'' includes many complete skeletons from Green River Formation sites (Early Eocene), suggesting that the birds nested in colonies and possibly were liable to succumb to botulism, similar to many colony-nesting waterfowl or shorebirds today. ''P. isoni'' is known from the Late Paleocene Aquia Formation (Maryland, 61-62 MYA) humerus (USNM 294116) and a fingerbone (USNM 294117) that were initially described, as well as from the humeri that were initially believed to be from '' Headonornis'' ( BMNH PAL 3686, 5105, 6240). As these are Late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AMNH
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] |
Aquia Formation
The Aquia Formation is a geologic sandstone formation that extends from the upper Chesapeake Bay to the James River near Hopewell, Virginia. It consists of clayey, silty, very shelly, glauconitic sand. Fossil records indicate that this stratigraphic unit was created during the Paleocene. The Aquia formation was named for Aquia Creek where it is exposed in cliff faces along the banks. Geology Lithology When uncovered, it appears dark green to gray-green, argillaceous, with well sorted fine- to medium-grained sand and locally indurated shell beds. It is between 0 and 100 feet thick in Maryland. Quartz and phosphatic pebbles and/or very coarse glauconitic quartz sand mark the base of the unit. A few hard streaks of shells or thin "rock" layers are often reported but appear to be more abundant in the sections south of the James River. Stratigraphy The Aquia formation is overlain by the Nanjemoy Formation and overlies the Brightseat Formation. The Aquia formation is brok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coracoid
A coracoid (from Greek κόραξ, ''koraks'', raven) is a paired bone which is part of the shoulder assembly in all vertebrates except therian mammals (marsupials and placentals). In therian mammals (including humans), a coracoid process is present as part of the scapula, but this is not homologous with the coracoid bone of most other vertebrates. In other tetrapods it joins the scapula to the front end of the sternum and has a notch on the dorsal surface which, along with a similar notch on the ventral surface of the scapula, forms the socket in which the proximal end of the humerus (upper arm bone) is located. The acrocoracoid process is an expansion adjacent to this contact surface, to which the shoulderward end of the biceps brachii muscle attaches in these animals. In birds (and generally theropods and related animals), the entire unit is rigid and called scapulocoracoid. This plays a major role in bird flight. In dinosaurs the main bones of the pectoral girdle were the sca ... [...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] |
Utah
Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to its west by Nevada. Utah also touches a corner of New Mexico in the southeast. Of the fifty U.S. states, Utah is the 13th-largest by area; with a population over three million, it is the 30th-most-populous and 11th-least-densely populated. Urban development is mostly concentrated in two areas: the Wasatch Front in the north-central part of the state, which is home to roughly two-thirds of the population and includes the capital city, Salt Lake City; and Washington County in the southwest, with more than 180,000 residents. Most of the western half of Utah lies in the Great Basin. Utah has been inhabited for thousands of years by various indigenous groups such as the ancient Puebloans, Navajo and Ute. The Spanish were the first Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ephraim, Utah
Ephraim is a city in Sanpete County, Utah, Sanpete County, Utah, United States. The population was 5,611 at the 2020 United States Census, 2020 census, making it the largest city in Sanpete County. It is the location of Snow College and is located along U.S. Route 89 in Utah, U.S. Route 89. History The first settlement at Ephraim was made in 1854. A post office called Ephraim has been in operation since 1856. The town was named after Ephraim of the Old Testament. Geography Ephraim is located in the Sanpete Valley, on the east side of the San Pitch River. According to the United States Census Bureau, the city has a total area of 3.6 square miles (9.2 km2), all land. Demographics As of the census of 2000, there were 4,505 people, 1,128 households, and 753 families residing in the city. The population density was 1,262.4 people per square mile (487.2/km2). There were 1,275 housing units at an average density of 357.3 per square mile (137.9/km2). The racial makeup of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wasatch Plateau
The Wasatch Plateau is a plateau located southeast of the southernmost part of the Wasatch Range in central Utah. It is a part of the Colorado Plateau. Geography The plateau has an elevation of and includes an area of . Its highest point in the South Tent Mountain, with an elevation of . The plateau is roughly bordered by the Spanish Fork Canyon on the north, the Price Canyon on the northeast, the Castle Valley on the east and southeast, Interstate 70 on the south, the Plateau Valley and the Sevier Plateau on the southwest, and the Sanpete Valley on the northwest. The majority of the plateau is within the boundaries of the Manti–La Sal National Forest and is managed by the United States Forest Service The United States Forest Service (USFS) is an agency of the U.S. Department of Agriculture that administers the nation's 154 national forests and 20 national grasslands. The Forest Service manages of land. Major divisions of the agency inc .... See also References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colton Formation
The Colton Formation is a geologic formation in Utah. Its age is based on its position between the Upper Cretaceous-Paleocene North Horn Formation and overlying Green River Formation. The name was first used by P.T. Walton in 1944 for strata below the Green River Formation at the base of the Roan Cliffs, Utah. However, the type section was first given by E.M. Spieker in 1946. for exposures near the town of Colton on Soldier Summit, Utah County, Utah. Previously, the strata were assigned to the Wasatch Formation, which had become a rather generic name by the US Geological Survey for mudstone-sandstone strata of Eocene age. The formation is composed of reddish-brown to green beds of mudstone and shaly siltstone, interlayered with yellowish- to grayish-orange and grayish-brown, thin, fine- to medium-grained quartzose sandstone beds. The mudstones are locally variegated in shades of red and gray. Many sandstones are cross-bedded in large and small trough sets and the thicker samdsto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Kansas Natural History Museum
The University of Kansas Natural History Museum is part of the University of Kansas Biodiversity Institute, a KU designated research center dedicated to the study of the life of the planet. The museum's galleries are in Dyche Hall on the university's main campus in Lawrence, Kansas. The galleries are open from 9 a.m. to 5 p.m. Tuesday through Saturday and noon to 4 p.m. on Sundays. Dyche Hall has been listed on the National Register of Historic Places since July 14, 1974; it was listed for its connection with Lewis Lindsay Dyche and for its distinctive Romanesque style of architecture. The exterior is constructed of local Oread Limestone, while the window facings, columns, arches, and grotesques are carved from Cottonwood Limestone. Dyche Hall is also the site of one of only three Victory Eagle statues in Kansas, once used as markers on the Victory Highway. Among its more than 350 separate exhibits, the museum is famous for its Panorama of North American Wildlife, part of w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bembridge Marls
The Bouldnor Formation is a geological formation in the Hampshire Basin of southern England. It is the youngest formation of the Solent Group and was deposited during the uppermost Eocene and lower Oligocene. Stratotype and occurrence The Bouldnor Formation was named after Bouldnor, a small hamlet east of Yarmouth, Isle of Wight, Yarmouth, Isle of Wight. The formation is exposed along ''Bouldnor Cliff'' between Yarmouth and Hamstead, Isle of Wight, Hamstead occupying the core of the east-southeast-striking ''Bouldnor Syncline''. Yet the stratotype of the formation is found at ''Whitecliff Bay'' on the east side of the Isle of Wight. History The Bouldnor Formation was scientifically established 1985 by A. Insole and B. Daly, who also defined its member (geology), members. The paleogene strata on the Isle of Wight had already been described in 1853 by Edward Forbes. Forbes was followed in 1921 by H.J.O. White, a geologist from the Geological Survey. Stratigraphy The Bouldn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural History Museum, London
The Natural History Museum in London is a museum that exhibits a vast range of specimens from various segments of natural history. It is one of three major museums on Exhibition Road in South Kensington, the others being the Science Museum and the Victoria and Albert Museum. The Natural History Museum's main frontage, however, is on Cromwell Road. The museum is home to life and earth science specimens comprising some 80 million items within five main collections: botany, entomology, mineralogy, palaeontology and zoology. The museum is a centre of research specialising in taxonomy, identification and conservation. Given the age of the institution, many of the collections have great historical as well as scientific value, such as specimens collected by Charles Darwin. The museum is particularly famous for its exhibition of dinosaur skeletons and ornate architecture—sometimes dubbed a ''cathedral of nature''—both exemplified by the large ''Diplodocus'' cast that domina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
