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Encrinus Liliiformis With Markup
''Encrinus'' is an Extinction, extinct genus of crinoids, and "one of the most famous". It lived during the Homerian, Late Silurian-Late Triassic, and its fossils have been found in Europe. History Fossils of ''Encrinus'' went by several names in Germany before the establishment of modern paleontology. In Lower Saxony, they were called ''Sonnenräder'' ("sun wheels"), while in Thuringia and Hesse they were called ''Bonifatiuspfennige'' ("Saint Boniface's pennies"). In southwestern Germany, they went by ''Hexengeld'' ("witches' money"). The animal was correctly reconstructed for the first time in 1729, although various parts of the animal had been described before that. ''Encrinus'' was described in 1764 by Johann Gerhard Reinhard Andreae. It was assigned to the order Encrinida by Jack Sepkoski in 2002. Description ''Encrinus'' possessed a large cup- or crown-like structure at the top of its body, which has been described as resembling "an unopened tulip." This "cup" could be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paläontologisches Museum München
The Palaeontological Museum in Germany (''Paläontologisches Museum München''), is a German national natural history museum located in the city of Munich, Bavaria. It is associated with the Ludwig-Maximilians-Universität. It has a large collection of fossils of animals and plants such as Mesozoic reptiles, early elephants and saber-toothed cats. The paleontological and geological institute which houses the museum is formally called the Bavarian State Collection for Palaeontology and Geology (''Bayerische Staatsammlung für Paläontologie und Geologie,'' BSPG), which itself is one of several institutions which make up the Bavarian Natural History Collections (''Staatliche Naturwissenschaftliche Sammlungen Bayerns'', SNSB). One of its highlights is the specimen of the early bird '' Archaeopteryx'' discovered in 1861. The museum is also interesting because of the architecture of its building, the former urban college of arts and crafts. See also * List of museums in German ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge University Press
Cambridge University Press is the university press of the University of Cambridge. Granted letters patent by Henry VIII of England, King Henry VIII in 1534, it is the oldest university press A university press is an academic publishing house specializing in monographs and scholarly journals. Most are nonprofit organizations and an integral component of a large research university. They publish work that has been reviewed by schola ... in the world. It is also the King's Printer. Cambridge University Press is a department of the University of Cambridge and is both an academic and educational publisher. It became part of Cambridge University Press & Assessment, following a merger with Cambridge Assessment in 2021. With a global sales presence, publishing hubs, and offices in more than 40 Country, countries, it publishes over 50,000 titles by authors from over 100 countries. Its publishing includes more than 380 academic journals, monographs, reference works, school and uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian–Triassic Extinction Event
The Permian–Triassic (P–T, P–Tr) extinction event, also known as the Latest Permian extinction event, the End-Permian Extinction and colloquially as the Great Dying, formed the boundary between the Permian and Triassic geologic periods, as well as between the Paleozoic and Mesozoic eras, approximately 251.9 million years ago. It is the Earth's most severe known extinction event, with the extinction of 57% of biological families, 83% of genera, 81% of marine species and 70% of terrestrial vertebrate species. It was the largest known mass extinction of insects. There is evidence for one to three distinct pulses, or phases, of extinction. The scientific consensus is that the main cause of extinction was the large amount of carbon dioxide emitted by the volcanic eruptions that created the Siberian Traps, which elevated global temperatures, and in the oceans led to widespread anoxia and acidification. Proposed contributing factors include: the emission of much addition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrus
Cirrus may refer to: Science *Cirrus (biology), any of various thin, thread-like structures on the body of an animal *Cirrus (botany), a tendril *Infrared cirrus, in astronomy, filamentary structures seen in infrared light *Cirrus cloud, a type of cloud Aviation *Cirrus aero engines, a series of British aircraft engines manufactured by various companies from the 1920s to the 1950s *Cirrus Aircraft, an aircraft manufacturer in Duluth, Minnesota, USA *Cirrus Airlines, a defunct regional airline in Hallbergmoos, Germany *Cirrus (rocket), a German research rocket first launched in 1961 *Schempp-Hirth Cirrus, an Open-class sailplane *Schempp-Hirth Standard Cirrus, a Standard-class sailplane *Swing Cirrus, a German paraglider design Music *Cirrus (album), ''Cirrus'' (album), a 1974 release by Bobby Hutcherson *Cirrus (band), an American electronica duo *Cirrus (song), "Cirrus" (song), a 2013 instrumental by DJ Bonobo *Cirrus Minor (song), "Cirrus Minor" (song), a 1969 song by Pink Fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ossicle
The ossicles (also called auditory ossicles) are three bones in either middle ear that are among the smallest bones in the human body. They serve to transmit sounds from the air to the fluid-filled labyrinth (cochlea). The absence of the auditory ossicles would constitute a moderate-to-severe hearing loss. The term "ossicle" literally means "tiny bone". Though the term may refer to any small bone throughout the body, it typically refers to the malleus, incus, and stapes (hammer, anvil, and stirrup) of the middle ear. Structure The ossicles are, in order from the eardrum to the inner ear (from superficial to deep): the malleus, incus, and stapes, terms that in Latin are translated as "the hammer, anvil, and stirrup". * The malleus ( la, "hammer") articulates with the incus through the incudomalleolar joint and is attached to the tympanic membrane (eardrum), from which vibrational sound pressure motion is passed. * The incus ( la, "anvil") is connected to both the other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cilium
The cilium, plural cilia (), is a membrane-bound organelle found on most types of eukaryotic cell, and certain microorganisms known as ciliates. Cilia are absent in bacteria and archaea. The cilium has the shape of a slender threadlike projection that extends from the surface of the much larger cell body. Eukaryotic flagella found on sperm cells and many protozoans have a similar structure to motile cilia that enables swimming through liquids; they are longer than cilia and have a different undulating motion. There are two major classes of cilia: ''motile'' and ''non-motile'' cilia, each with a subtype, giving four types in all. A cell will typically have one primary cilium or many motile cilia. The structure of the cilium core called the axoneme determines the cilium class. Most motile cilia have a central pair of single microtubules surrounded by nine pairs of double microtubules called a 9+2 axoneme. Most non-motile cilia have a 9+0 axoneme that lacks the central pair o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filter Feeder
Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Some animals that use this method of feeding are clams, krill, sponges, baleen whales, and many fish (including some sharks). Some birds, such as flamingos and certain species of duck, are also filter feeders. Filter feeders can play an important role in clarifying water, and are therefore considered ecosystem engineers. They are also important in bioaccumulation and, as a result, as indicator organisms. Fish Most forage fish are filter feeders. For example, the Atlantic menhaden, a type of herring, lives on plankton caught in midwater. Adult menhaden can filter up to four gallons of water a minute and play an important role in clarifying ocean water. They are also a natural check to the deadly red tide. Extensive article on the role of menhaden in the ecosystem and possible resul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plankton
Plankton are the diverse collection of organisms found in Hydrosphere, water (or atmosphere, air) that are unable to propel themselves against a Ocean current, current (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a crucial source of food to many small and large aquatic organisms, such as bivalves, fish and whales. Marine plankton include bacteria, archaea, algae, protozoa and drifting or floating animals that inhabit the saltwater of oceans and the brackish waters of estuaries. Freshwater plankton are similar to marine plankton, but are found in the freshwaters of lakes and rivers. Plankton are usually thought of as inhabiting water, but there are also airborne versions, the aeroplankton, that live part of their lives drifting in the atmosphere. These include plant spores, pollen and wind-scattered seeds, as well as microorganisms swept into the air from terrestrial dust storms and oceanic plankton swept into the air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concave
Concave or concavity may refer to: Science and technology * Concave lens * Concave mirror Mathematics * Concave function, the negative of a convex function * Concave polygon, a polygon which is not convex * Concave set * The concavity In calculus, the second derivative, or the second order derivative, of a function is the derivative of the derivative of . Roughly speaking, the second derivative measures how the rate of change of a quantity is itself changing; for example, ... of a function, determined by its second derivative See also * {{disambiguation, math ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symmetry
Symmetry (from grc, συμμετρία "agreement in dimensions, due proportion, arrangement") in everyday language refers to a sense of harmonious and beautiful proportion and balance. In mathematics, "symmetry" has a more precise definition, and is usually used to refer to an object that is invariant under some transformations; including translation, reflection, rotation or scaling. Although these two meanings of "symmetry" can sometimes be told apart, they are intricately related, and hence are discussed together in this article. Mathematical symmetry may be observed with respect to the passage of time; as a spatial relationship; through geometric transformations; through other kinds of functional transformations; and as an aspect of abstract objects, including theoretic models, language, and music. This article describes symmetry from three perspectives: in mathematics, including geometry, the most familiar type of symmetry for many people; in science and nature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tulip
Tulips (''Tulipa'') are a genus of spring-blooming perennial herbaceous bulbiferous geophytes (having bulbs as storage organs). The flowers are usually large, showy and brightly coloured, generally red, pink, yellow, or white (usually in warm colours). They often have a different coloured blotch at the base of the tepals (petals and sepals, collectively), internally. Because of a degree of variability within the populations, and a long history of cultivation, classification has been complex and controversial. The tulip is a member of the lily family, Liliaceae, along with 14 other genera, where it is most closely related to '' Amana'', ''Erythronium'' and ''Gagea'' in the tribe Lilieae. There are about 75 species, and these are divided among four subgenera. The name "tulip" is thought to be derived from a Persian word for turban, which it may have been thought to resemble by those who discovered it. Tulips originally were found in a band stretching from Southern Europe to Ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encrinus Liliiformis With Markup
''Encrinus'' is an Extinction, extinct genus of crinoids, and "one of the most famous". It lived during the Homerian, Late Silurian-Late Triassic, and its fossils have been found in Europe. History Fossils of ''Encrinus'' went by several names in Germany before the establishment of modern paleontology. In Lower Saxony, they were called ''Sonnenräder'' ("sun wheels"), while in Thuringia and Hesse they were called ''Bonifatiuspfennige'' ("Saint Boniface's pennies"). In southwestern Germany, they went by ''Hexengeld'' ("witches' money"). The animal was correctly reconstructed for the first time in 1729, although various parts of the animal had been described before that. ''Encrinus'' was described in 1764 by Johann Gerhard Reinhard Andreae. It was assigned to the order Encrinida by Jack Sepkoski in 2002. Description ''Encrinus'' possessed a large cup- or crown-like structure at the top of its body, which has been described as resembling "an unopened tulip." This "cup" could be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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