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Obamus
''Obamus coronatus'' is a torus-shaped Ediacaran fossil from the Rawnsley Quartzite of South Australia named in honor of former American President Barack Obama by the lab of Mary L. Droser. Morphology The fossils show a multi-ridged body embedded in the biofilm of the original environment, with one end of the body tucked into or beneath the other end to form a ring, so that the living organism would have resembled a French cruller doughnut. Etymology The generic epithet honors President Obama, partly in reference to his love and patronage of the sciences, and allegedly because the fossil organisms resemble his ear. The specific epithet, ''coronatus'', meaning "equipped with a wreath" (or "crowned"), refers to the torus or ring-shape of the fossils. See also * List of things named after Barack Obama * List of organisms named after famous people (born 1950–present) In biological nomenclature, organisms often receive scientific names that honor a person. A taxon (e.g. species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Organisms Named After Famous People (born 1950–present)
In biological nomenclature, organisms often receive scientific names that honor a person. A taxon (e.g. species or genus; plural: taxa) named in honor of another entity is an eponymous taxon, and names specifically honoring a person or persons are known as patronyms. Scientific names are generally formally published in peer-reviewed journal articles or larger monographs along with descriptions of the named taxa and ways to distinguish them from other taxa. Following rules of Latin grammar, species or subspecies names derived from a man's name often end in ''-i'' or ''-ii'' if named for an individual, and ''-orum'' if named for a group of men or mixed-sex group, such as a family. Similarly, those named for a woman often end in ''-ae'', or ''-arum'' for two or more women. This list is part of the list of organisms named after famous people, and includes organisms named after famous individuals born on or after the 1st of January 1950. It also includes ensembles (including bands and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2020 In Paleontology
Plants Sponges Cnidarians New taxa Research * Revision of tabulate-like fossils from before the latest Middle Ordovician is published by Elias, Lee & Pratt (2020), who reject the interpretation of these fossils as true tabulate corals. * Drake, Whitelegge & Jacobs (2020) report the first recovery, sequencing, and identification of fossil biomineral proteins from a Pleistocene fossil invertebrate (the stony coral ''Orbicella annularis''). Arthropods Bryozoans Brachiopods New taxa Research * A study on the mode of life of Paleozoic strophomenatans is published by Stanley (2020), who argues that nearly all strophomenatans lived infaunally. * A study on the paleobiogeography of Early−Middle Devonian (Pragian−Eifelian) brachiopods from West Gondwana, aiming to determine any potential controls that may have driven bioregionalization, is published by Penn-Clarke & Harper (2020). * A study on the phylogenetic relationships and ecomorphologic diversification of Mesozoi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Things Named After Barack Obama
This is a list of things named after Barack Obama, the 44th president of the United States. This list includes proposed name changes. Biota Barack Obama has been commemorated in the scientific names of at least 14 species, the most of any U.S. president. Animals *'' Aptostichus barackobamai'', a species of wafer trapdoor spiders *'' Baracktrema obamai'', a blood fluke found in Malaysian turtles *'' Desmopachria barackobamai'', a diving beetle from French Guiana *'' Etheostoma obama'', a darter species * '' Lasioglossum obamai'', a Cuban bee * '' Nystalus obamai'' (Western striolated puffbird), a bird from the Amazon *'' Obamadon gracilis'', an extinct lizard *''Paragordius obamai'', a parasitic worm from phylum Nematomorpha * ''Placida barackobamai'', a sea slug * ''Spintharus barackobamai'', a Cuban spider * ''Teleogramma obamaorum'', a cichlid, honoring Barack Obama and First Lady Michelle Obama * ''Tosanoides obama'', a fish discovered in the Papahanaumokuakea Marine Nation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ediacaran
The Ediacaran Period ( ) is a geological period that spans 96 million years from the end of the Cryogenian Period 635 million years ago (Mya), to the beginning of the Cambrian Period 538.8 Mya. It marks the end of the Proterozoic Eon, and the beginning of the Phanerozoic Eon. It is named after the Ediacara Hills of South Australia. The Ediacaran Period's status as an official geological period was ratified in 2004 by the International Union of Geological Sciences (IUGS), making it the first new geological period declared in 120 years. Although the period takes its name from the Ediacara Hills where geologist Reg Sprigg first discovered fossils of the eponymous Ediacaran biota in 1946, the type section is located in the bed of the Enorama Creek within Brachina Gorge in the Flinders Ranges of South Australia, at . The Ediacaran marks the first appearance of widespread multicellular fauna following the end of Snowball Earth glaciation events, the so-called Ediacaran biota, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incertae Sedis
' () or ''problematica'' is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertainty at specific taxonomic levels is indicated by ' (of uncertain family), ' (of uncertain suborder), ' (of uncertain order) and similar terms. Examples *The fossil plant '' Paradinandra suecica'' could not be assigned to any family, but was placed ''incertae sedis'' within the order Ericales when described in 2001. * The fossil ''Gluteus minimus'', described in 1975, could not be assigned to any known animal phylum. The genus is therefore ''incertae sedis'' within the kingdom Animalia. * While it was unclear to which order the New World vultures (family Cathartidae) should be assigned, they were placed in Aves ''incertae sedis''. It was later agreed to place them in a separate order, Cathartiformes. * Bocage's longbill, ''Motacilla bocagii' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rawnsley Quartzite
Rawnsley is a family name; it may refer to: ;People * Andrew Rawnsley (born 1962), British political journalist * Brenda Rawnsley (1916-2007), British arts campaigner and arts education activist * David Rawnsley (1909–1977), British art director * Hardwicke Rawnsley (1851-1920), English clergyman, poet, writer of hymns and conservationist * John Rawnsley (born 1950), English actor and opera singer * Jimmy Rawnsley (1904-1965), English night fighter radar operator * Kenneth Rawnsley (1926-1992), English psychiatrist * Matthew Rawnsley (born 1976), English cricketer * Willingham Franklin Rawnsley (1845?–1927), British author and school proprietor ;Places * Rawnsley, Staffordshire Rawnsley is an area of Cannock Chase District, Staffordshire, England. It is located between Hazelslade and Prospect Village. Rawnsley is a former mining hamlet and was served by the mineral line from Hednesford to Burntwood which carried minera ..., village in England * Rawnsley's Bluff, geologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Australia
South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories by area, and second smallest state by population. It has a total of 1.8 million people. Its population is the second most highly centralised in Australia, after Western Australia, with more than 77 percent of South Australians living in the capital Adelaide, or its environs. Other population centres in the state are relatively small; Mount Gambier, the second-largest centre, has a population of 33,233. South Australia shares borders with all of the other mainland states, as well as the Northern Territory; it is bordered to the west by Western Australia, to the north by the Northern Territory, to the north-east by Queensland, to the east by New South Wales, to the south-east by Victoria, and to the south by the Great Australian Bight.M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barack Obama
Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, Obama was the first African-American president of the United States. He previously served as a U.S. senator from Illinois from 2005 to 2008 and as an Illinois state senator from 1997 to 2004, and previously worked as a civil rights lawyer before entering politics. Obama was born in Honolulu, Hawaii. After graduating from Columbia University in 1983, he worked as a community organizer in Chicago. In 1988, he enrolled in Harvard Law School, where he was the first black president of the '' Harvard Law Review''. After graduating, he became a civil rights attorney and an academic, teaching constitutional law at the University of Chicago Law School from 1992 to 2004. Turning to elective politics, he represented the 13th district in the Illinois Senate from 1997 until 2004, when he ran for the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mary L
Mary may refer to: People * Mary (name), a feminine given name (includes a list of people with the name) Religious contexts * New Testament people named Mary, overview article linking to many of those below * Mary, mother of Jesus, also called the Blessed Virgin Mary * Mary Magdalene, devoted follower of Jesus * Mary of Bethany, follower of Jesus, considered by Western medieval tradition to be the same person as Mary Magdalene * Mary, mother of James * Mary of Clopas, follower of Jesus * Mary, mother of John Mark * Mary of Egypt, patron saint of penitents * Mary of Rome, a New Testament woman * Mary, mother of Zechariah and sister of Moses and Aaron; mostly known by the Hebrew name: Miriam * Mary the Jewess one of the reputed founders of alchemy, referred to by Zosimus. * Mary 2.0, Roman Catholic women's movement * Maryam (surah) "Mary", 19th surah (chapter) of the Qur'an Royalty * Mary, Countess of Blois (1200–1241), daughter of Walter of Avesnes and Margaret of Blois * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biofilm
A biofilm comprises any syntrophic consortium of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix that is composed of extracellular polymeric substances (EPSs). The cells within the biofilm produce the EPS components, which are typically a polymeric conglomeration of extracellular polysaccharides, proteins, lipids and DNA. Because they have three-dimensional structure and represent a community lifestyle for microorganisms, they have been metaphorically described as "cities for microbes". Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial, and hospital settings. They may constitute a microbiome or be a portion of it. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single cells that may float or swim in a liquid medium. Biofilms can form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruller
A cruller () is a deep-fried pastry like a doughnut popular in Europe and North America often made from a rectangle of dough with a cut made in the middle that allows it to be pulled over and through itself, producing twists in the sides of the pastry. The cruller has been described as resembling "a small, braided torpedo". Some other cruller styles are made of a denser dough somewhat like that of a cake doughnut formed in a small loaf or stick shape, but not always twisted. Crullers may be topped with powdered sugar (sometimes mixed with cinnamon) or icing. A French cruller is a fluted, ring-shaped doughnut made from choux pastry with a light airy texture. The German '' Spritzkuchen'' is very similar, while the Dutch and Belgian '' sprits'' is baked instead of being fried. History The name ''cruller'' comes from the early 19th-century Dutch , from 'to curl'. In northern Germany they are known as ('deer horns'). They are traditionally baked on New Year's Eve as a family ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ediacaran Life
The Ediacaran (; formerly Vendian) biota is a taxonomic period classification that consists of all life forms that were present on Earth during the Ediacaran Period (). These were composed of enigmatic tubular and frond-shaped, mostly sessile, organisms. Trace fossils of these organisms have been found worldwide, and represent the earliest known complex multicellular organisms. The Ediacaran biota may have undergone evolutionary radiation in a proposed event called the Avalon explosion, . This was after the Earth had thawed from the Cryogenian period's extensive glaciation. This biota largely disappeared with the rapid increase in biodiversity known as the Cambrian explosion. Most of the currently existing body plans of animals first appeared in the fossil record of the Cambrian rather than the Ediacaran. For macroorganisms, the Cambrian biota appears to have almost completely replaced the organisms that dominated the Ediacaran fossil record, although relationships are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
