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Clavulina (foram)
''Clavulina'' is a genus of aggulinated benthic foraminiferans with an elongate test. The early stage is triserial and triangular in section, the later stage uniserial and rectilinear, with angular to rounded section. In some species agglutinated walls have considerable calcareous cement. Septa are secondarily doubled as a result of imperforate floors, which are added as new chambers are formed. Walls contain fine bifurcating canaliculi within, openings of which are sealed internally by an inner organic lining, and externally by the imperforate surface layer of the wall. The aperture is interiomarginal in the early triserial stage, terminal and rounded in the adult. The genus ''Clavulina'' was named by d'Orbigny, 1826. It is included in the textulariid family, Valvulinidae and is cosmopolitan in distribution, with a range extending from the Paleocene to now. Species There are many species, extant and extinct, including: * †''Clavulina alazanensis'' Nuttall, 1932 * †''Cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleocene
The Paleocene, ( ) or Palaeocene, is a geological epoch (geology), epoch that lasted from about 66 to 56 mya (unit), million years ago (mya). It is the first epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name is a combination of the Ancient Greek ''palaiós'' meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translating to "the old part of the Eocene". The epoch is bracketed by two major events in Earth's history. The K–Pg extinction event, brought on by Chicxulub impact, an asteroid impact and possibly volcanism, marked the beginning of the Paleocene and killed off 75% of living species, most famously the non-avian dinosaurs. The end of the epoch was marked by the Paleocene–Eocene Thermal Maximum (PETM), which was a major climatic event wherein about 2,500–4,500 gigatons of carbon were released into the atmosphere and ocean systems, causing a spike in global temperatures and ocean acidification. In the Pal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foraminifera
Foraminifera (; Latin for "hole bearers"; informally called "forams") are single-celled organisms, members of a phylum or class of amoeboid protists characterized by streaming granular Ectoplasm (cell biology), ectoplasm for catching food and other uses; and commonly an external shell (called a "Test (biology), test") of diverse forms and materials. Tests of chitin (found in some simple genera, and Textularia in particular) are believed to be the most primitive type. Most foraminifera are marine, the majority of which live on or within the seafloor sediment (i.e., are benthos, benthic), while a smaller number float in the water column at various depths (i.e., are planktonic), which belong to the suborder Globigerinina. Fewer are known from freshwater or brackish conditions, and some very few (nonaquatic) soil species have been identified through molecular analysis of small subunit ribosomal DNA. Foraminifera typically produce a test (biology), test, or shell, which can have eithe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foraminifera Genera
Foraminifera (; Latin for "hole bearers"; informally called "forams") are single-celled organisms, members of a phylum or class of amoeboid protists characterized by streaming granular ectoplasm for catching food and other uses; and commonly an external shell (called a "test") of diverse forms and materials. Tests of chitin (found in some simple genera, and Textularia in particular) are believed to be the most primitive type. Most foraminifera are marine, the majority of which live on or within the seafloor sediment (i.e., are benthic), while a smaller number float in the water column at various depths (i.e., are planktonic), which belong to the suborder Globigerinina. Fewer are known from freshwater or brackish conditions, and some very few (nonaquatic) soil species have been identified through molecular analysis of small subunit ribosomal DNA. Foraminifera typically produce a test, or shell, which can have either one or multiple chambers, some becoming quite elaborate in struc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Treatise On Invertebrate Paleontology
The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and covering every phylum, class, order, family, and genus of fossil and extant (still living) invertebrate animals. The prehistoric invertebrates are described as to their taxonomy, morphology, paleoecology, stratigraphic and paleogeographic range. However, taxa with no fossil record whatsoever have just a very brief listing. Publication of the decades-long ''Treatise on Invertebrate Paleontology'' is a work-in-progress; and therefore it is not yet complete: For example, there is no volume yet published regarding the post-Paleozoic era caenogastropods (a molluscan group including the whelk and Common periwinkle, periwinkle). Furthermore, every so often, previously published volumes of the ''Treatise'' are revised. Evolution of the proje ... [...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. Early life Dr Helen Nina Tappan Leoblich was born on October 12, 1917, in Norman, Oklahoma. She came from a well-educated background. 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. Education Tappan Loeblich earned her BS in 1937 and her Master's in 1939, both in geology from the University of Oklahoma. Her master's thesis was on mid-Cretaceous foraminifera of Oklahoma and Texas. At the University of Oklahoma, she met her future husband and long time scientific collaborator, Alfred R. Loeblich Jr, in c ... [...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 Island, Nunavut * Mount Alfred, British Columbia United States * Alfred, Maine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Augustine Cushman
Joseph Augustine Cushman (January 31, 1881 – April 16, 1949) was an American geologist, paleontologist and foraminiferologist. Biography He was born on January 31, 1881 in Bridgewater, Massachusetts, the son of Darius and Jane (Fuller) Cushman. His primary education took place at Bridgewater Normal School, graduating in 1901. He was the captain and catcher for the baseball team along with fullback and manager for the football team. Later he was educated at Harvard University, where he received a B.S. in 1903, conferred magna cum laude. In October 1903, he married Alice Edna Wilson, with whom he had three children, Robert, Alice and Ruth, born in 1905, 1907 and 1910, respectively. He became a curator at the Boston Natural History Museum, working part-time so he could attend graduate school. He was awarded his Ph.D. from Harvard in 1909. His wife, Alice, died in January 1912; by September 1913, he had remarried to Frieda Gerlach Billings. In 1913 he became the director of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arenodosaria
''Arenodosaria'' is an extinct genus of foraminifera Foraminifera (; Latin for "hole bearers"; informally called "forams") are single-celled organisms, members of a phylum or class of amoeboid protists characterized by streaming granular Ectoplasm (cell biology), ectoplasm for catching food and ot ...ns. The species are known from the Miocene of New Zealand.Hornibrook de B., N. (1961). Tertiary Foraminifera from Oamaru District (N.Z). Part 1- Systematics and Distribution. New Zealand Geological Survey Paleontological Bulletin. 34: 1-194 Species * †''Arenodosaria antipodum'' (Stache, 1864) (syn. †'' Clavulina antipodum'' Stache, 1864 and †''Clavulina elegans'' Karrer, 1864) * †''Arenodosaria kaiataensis'' Dorreen, 1948 * †''Arenodosaria turris'' Kennett, 1967 ; Names brought to synonymy: * †''Arenodosaria antipoda'' (Stache, 1864) accepted as †''Arenodosaria antipodum'' (Stache, 1864) * †''Arenodosaria robusta'' (Stache, 1864) accepted as †''Arenodosaria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavulina Arenata
''Clavulina'' is a genus of fungus in the family Clavulinaceae, in the Cantharelloid clade (order Cantharellales). Species are characterized by having extensively branched fruit bodies, white spore prints, and bisterigmate basidia (often with secondary septation). Branches are cylindrical or flattened, blunt, and pointed or crested at the apex, hyphae with or without clamps, basidia cylindrical to narrowly clavate, mostly with two sterigmata which are large and strongly incurved and spores subspherical or broadly ellipsoid, smooth, and thin-walled, each with one large oil drop or guttule. The genus contains approximately forty-five species with a worldwide distribution, primarily in tropical regions. Species of ''Clavulina'' are mostly ectomycorrhiza A mycorrhiza (from Greek μύκης ', "fungus", and ῥίζα ', "root"; pl. mycorrhizae, mycorrhiza or mycorrhizas) is a symbiotic association between a fungus and a plant. The term mycorrhiza refers to the role of the fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavulina Angularis
''Clavulina'' is a genus of fungus in the family Clavulinaceae, in the Cantharelloid clade (order Cantharellales). Species are characterized by having extensively branched fruit bodies, white spore prints, and bisterigmate basidia (often with secondary septation). Branches are cylindrical or flattened, blunt, and pointed or crested at the apex, hyphae with or without clamps, basidia cylindrical to narrowly clavate, mostly with two sterigmata which are large and strongly incurved and spores subspherical or broadly ellipsoid, smooth, and thin-walled, each with one large oil drop or guttule. The genus contains approximately forty-five species with a worldwide distribution, primarily in tropical regions. Species of ''Clavulina'' are mostly ectomycorrhiza A mycorrhiza (from Greek μύκης ', "fungus", and ῥίζα ', "root"; pl. mycorrhizae, mycorrhiza or mycorrhizas) is a symbiotic association between a fungus and a plant. The term mycorrhiza refers to the role of the fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valvulinidae
The Valvulinidae is a family of Paleocene to recent benthos, benthic Textulariida, textulariid Foraminifera characterized by trochospiral tests in the early stage which may become uniserial in the later. Walls are of cemented agglutinated material and have cavities created by micro-tubules, i.e. are canaliculate. Apertures have a valvular tooth or flap, at least in early stage, but may become multiple and areal in the later stage. Three subfamilies have been defined, the Valvulininae, Siphobigenerininae, and Tritaxilininae. References * * {{Taxonbar, from=Q7912855 Foraminifera families Globothalamea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene has been identified with the current warm period, known as MIS 1. It is considered by some to be an interglacial period within the Pleistocene Epoch, called the Flandrian interglacial.Oxford University Press – Why Geography Matters: More Than Ever (book) – "Holocene Humanity" section https://books.google.com/books?id=7P0_sWIcBNsC The Holocene corresponds with the rapid proliferation, growth and impacts of the human species worldwide, including all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
