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Cheleutochroa
''Cheleutochroa'' is an extinct genus of acritarchs from the Ordovician. ''C. elegans'' was recovered from Rapla Rapla ( (the name ''Rappel'' was also used in other languages in the past) is a Populated places in Estonia, town in north-central Estonia'','' the capital of Rapla County and the centre of Rapla Parish. History The oldest records date back ... borehole in Estonia.Ordovician acritarchs from the Rapla borehole, Estonia. A Uutela and R Tynni, 1991 References External links * ''Cheleutochroa'' at fossiilid.info Acritarch genera Fossils of Estonia {{Estonia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acritarch
Acritarchs () are organic microfossils, known from the Precambrian to the present. The classification is a catch all term used to refer to any organic microfossils that cannot be assigned to other groups. Their diversity reflects major ecological events such as the appearance of predation and the Cambrian explosion. Many acritarchs likely represent resting cysts of single-celled marine phytoplanktonic algae, similar to those produced by living dinoflagellates. Definition Acritarchs were originally defined as non-acid soluble (i.e. non-carbonate, non- siliceous) organic-walled microfossils consisting of a central cavity, and whose biological affinities cannot be determined with certainty. Most commonly they are composed of thermally altered acid insoluble carbon compounds (kerogen). Acritarchs may include the remains of a wide range of quite different kinds of organisms—ranging from the egg cases of small metazoans to resting cysts of many kinds of chlorophyta (green alga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapla
Rapla ( (the name ''Rappel'' was also used in other languages in the past) is a Populated places in Estonia, town in north-central Estonia'','' the capital of Rapla County and the centre of Rapla Parish. History The oldest records date back to 1241 in the Danish Census Book, when it was said that it was a small village with 8 acres of cultivated fields. By the end of the 13th century, the village centre was firmly established. At around the same time, a Cistercians, Cistercian monastery was built. Rapla's ambitious period of fast growth began only in the late 19th century. In 1866, a pharmacy was built, in 1868 a school, and in 1888 a hospital. In 1898, a brick factory was opened, and in 1900, a railway line was built between Rapla and Viljandi. The old stone church was demolished in the late 19th century and a new one was built in a Romanesque style, one of the purest examples of this style in all of Estonia. In 1913, Rapla consisted of around 20 stone and 60 wooden house ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acritarch Genera
Acritarchs () are organic microfossils, known from the Precambrian to the present. The classification is a catch all term used to refer to any organic microfossils that cannot be assigned to other groups. Their diversity reflects major ecological events such as the appearance of predation and the Cambrian explosion. Many acritarchs likely represent resting cysts of single-celled marine phytoplanktonic algae, similar to those produced by living dinoflagellates. Definition Acritarchs were originally defined as non-acid soluble (i.e. non-carbonate, non-siliceous) organic-walled microfossils consisting of a central cavity, and whose biological affinities cannot be determined with certainty. Most commonly they are composed of thermally altered acid insoluble carbon compounds (kerogen). Acritarchs may include the remains of a wide range of quite different kinds of organisms—ranging from the egg cases of small metazoans to resting cysts of many kinds of chlorophyta (green algae). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred R
Alfred may refer to: Arts and entertainment *'' Alfred J. Kwak'', Dutch-German-Japanese anime television series * ''Alfred'' (Arne opera), a 1740 masque by Thomas Arne * ''Alfred'' (Dvořák), an 1870 opera by Antonín Dvořák *"Alfred (Interlude)" and "Alfred (Outro)", songs by Eminem from the 2020 album '' Music to Be Murdered By'' Business and organisations * Alfred, a radio station in Shaftesbury, England * Alfred Music, an American music publisher * Alfred University, New York, U.S. * The Alfred Hospital, a hospital in Melbourne, Australia People * Alfred (name) includes a list of people and fictional characters called Alfred * Alfred the Great (848/49 – 899), or Alfred I, a king of the West Saxons and of the Anglo-Saxons Places Antarctica * Mount Alfred (Antarctica) Australia * Alfredtown, New South Wales * County of Alfred, South Australia Canada * Alfred and Plantagenet, Ontario ** Alfred, Ontario, a community in Alfred and Plantagenet * Alfred Island, Nunavu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helen Niña Tappan Loeblich
Helen Niña Tappan Loeblich (October 12, 1917 – August 18, 2004) was an American micropaleontologist who was a professor of geology at the University of California, Los Angeles, a United States Geological Survey (USGS) biostratigrapher, and a scientific illustrator whose micropaleontology specialty was research on Cretaceous foraminifera. She received a Guggenheim Fellowship award in 1953 and travelled to Europe to focus on her studies of foraminifera with her husband. She would also be awarded with multiple other titles and was recognized as the first woman professor in Tulane University. Early life Helen Nina Tappan Leoblich was born on October 12, 1917, in Norman, Oklahoma on Columbus Day, which is why her middle name is Nina. Her mother Mary Pearl Jenks Tappan was a math teacher at Cornell, and her father, Frank Girard Tappan, was a Dean of Electrical Engineering at the University of Oklahoma.In Memoriam: Dr. Helen Nina Tappan Loeblich. Journal of Foraminifera R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordovician
The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era, and the second of twelve periods of the Phanerozoic Eon (geology), Eon. The Ordovician spans 41.6 million years from the end of the Cambrian Period Megaannum, Ma (million years ago) to the start of the Silurian Period Ma. The Ordovician, named after the Celtic Britons, Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same Rock (geology), rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed Stratum, strata were different from those of either the Cambrian or the Silurian systems, and placed them in a system of their own. The Ordovician received international approval in 1960 (forty years after Lapworth's death), when it was adopted as an official per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
