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Redpath Museum
The Redpath Museum (french: Musée Redpath) is a museum of natural history belonging to McGill University and located on the university's campus at 859, rue Sherbrooke Ouest (859 Sherbrooke Street West) in Montreal, Quebec. It was built in 1882 as a gift from the sugar baron Peter Redpath. It houses collections of interest to ethnology, biology, paleontology, and mineralogy/geology. The collections were started by some of the same individuals who founded the Smithsonian and Royal Ontario Museum collections. The current director is Hans Larsson. Commissioned by Redpath to mark the 25th anniversary of Sir John William Dawson's appointment as Principal, the Museum was designed by A.C. Hutchison and A.D. Steele. McGill University's Redpath Museum website characterizes it as an "idiosyncratic expression of eclectic Victorian Classicism" as well as "an unusual and late example of the Greek Revival in North America." It is the oldest building built specifically to be a museum in Can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redpath Sugar Museum
The Redpath Sugar Refinery is a sugar storage, refining and museum complex in Toronto, Ontario, Canada. ''Emporis.com''. The site is located east of , the intersection of Queens Quay and . Buildings The complex, opened in 1958, houses the storage and refining plant of Toronto-based |
Royal Ontario Museum
The Royal Ontario Museum (ROM) is a museum of art, world culture and natural history in Toronto, Ontario, Canada. It is one of the largest museums in North America and the largest in Canada. It attracts more than one million visitors every year, making the ROM the most-visited museum in Canada. The museum is north of Queen's Park, in the University of Toronto district, with its main entrance on Bloor Street West. Museum subway station is named after the ROM and, since a 2008 renovation, is decorated to resemble the institution's collection at the platform level. Established on April 16, 1912, and opened on March 19, 1914, the museum has maintained close relations with the University of Toronto throughout its history, often sharing expertise and resources. The museum was under the direct control and management of the University of Toronto until 1968, when it became an independent Crown agency of the Government of Ontario. Today, the museum is Canada's largest field-research in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrerpeton
''Dendrerpeton'' (from el, δένδρον , 'tree' and el, ἑρπετόν , 'creeping thing') is a genus of an extinct group of temnospondyl amphibians. Its fossils have been found primarily in the Joggins Formation of Eastern Canada and in Ireland. It lived during the Carboniferous and is said to be around 309–316 million years of age, corresponding to more specifically the Westphalian (stage) age. Of terrestrial temnospondyl amphibians evolution, it represents the first stage. Although multiple species have been proposed, the species unanimously recognized is ''D. acadianum''. This species name comes from “Acadia” which is a historical name for the Nova Scotia region as a French colony. It refers to the location of the coal field at which the fossil was found. History and discovery The majority of ''Dendrerpeton'' fossils that had been discovered were disarticulated due to the way in which they had formed. They are often associated with Lycopod, Sigillaria, and Cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labrador Duck
The Labrador duck (''Camptorhynchus labradorius'') was a North American bird; it has the distinction of being the first known endemic North American bird species to become extinct after the Columbian Exchange, with the last known sighting occurring in 1878 in Elmira, New York. It was already a rare duck before European settlers arrived, and as a result of its rarity, information on the Labrador duck is not abundant, although some, such as its habitat, characteristics, dietary habits and reasons behind its extinction, are known. There are 55 specimens of the Labrador duck preserved in museum collections worldwide. Taxonomy The Labrador duck is considered a sea duck. A basic difference in the shape of the process of metacarpal I divides the sea ducks into two groups: #'' Bucephala'' and the mergansers #The eiders, scoters, ''Histrionicus'', ''Clangula'', and ''Camptorhynchus'' The position of the nutrient foramen of the tarsometatarsus also separates the two groups of sea ducks. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pecopteris Bucklandi
''Pecopteris'' is a very common form genus of leaves. Most ''Pecopteris'' leaves and fronds are associated with the marattialean tree fern ''Psaronius''. However, ''Pecopteris''-type foliage also is borne on several filicalean ferns, and at least one seed fern. Pecopteris first appeared in the Devonian period, but flourished in the Carboniferous, especially the Pennsylvanian. Plants bearing these leaves became extinct in the Permian period, due to swamps disappearing and temperatures on Earth dropping. Etymology ''Pecopteris'' is derived from the Greek ''pekin'', (to comb), and ''pteris'', (a fern). This is because the leaflets of ''Pecopteris'' fronds are arranged like the teeth on a comb. Species As of 1997, there have been 250-300 species assigned to ''Pecopteris''. In Brazil, fossil of form genus ''Pecopteris'' was located in outcrop ''Morro Papalé'' in the city of Mariana Pimentel. They are in the geopark Paleorrota in Rio Bonito Formation and date from Sakmarian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnoscelis
''Limnoscelis'' (\ limˈnäsələ̇s \, meaning "marsh footed") was a genus of large diadectomorph tetrapods from the Late Carboniferous of western North America. It includes two species: the type species ''Limnoscelis paludis'' from New Mexico, and ''Limnoscelis dynatis'' from Colorado, both of which are thought to have lived concurrently. No specimens of ''Limnoscelis'' are known from outside of North America. ''Limnoscelis'' was carnivorous, and likely semiaquatic, though it may have spent a significant portion of its life on land. ''Limnoscelis'' had a combination of derived amphibian and primitive reptilian features, and its placement relative to Amniota has significant implications regarding the origins of the first amniotes. Discovery and naming The type species ''Limnoscelis paludis'' was collected by the fossil hunter David Baldwin between 1877 and 1880 from the El Cobre Canyon beds of the Cutler Formation, New Mexico. Baldwin was collecting fossils in service of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marrella
''Marrella'' is an extinct genus of marrellomorph arthropod known from the middle Cambrian Burgess Shale of British Columbia. It is the most common animal represented in the Burgess Shale, with tens of thousands of specimens collected. Much rarer remains are also known from deposits in China. History ''Marrella'' was the first fossil collected by Charles Doolittle Walcott from the Burgess Shale, in 1909. Walcott described ''Marrella'' informally as a "lace crab" and described it more formally as an odd trilobite. It was later reassigned to the now defunct class Trilobitoidea in the ''Treatise on Invertebrate Paleontology''. In 1971, Whittington undertook a thorough redescription of the animal and, on the basis of its legs, gills and head appendages, concluded that it was neither a trilobite, nor a chelicerate, nor a crustacean. ''Marrella'' is one of several unique arthropod-like organisms found in the Burgess Shale. Other examples are ''Opabinia'' and ''Yohoia''. The unusual a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claudiosaurus Germaini
''Claudiosaurus'' (''claudus'' is Latin for 'lameness' and ''saurus'' means 'lizard') is an extinct genus of diapsid reptiles from the Permian Sakamena Formation of the Morondava Basin, Madagascar. The pattern of the vertebrate, girle, and limbs indicates that ''Claudiosaurus'' and ''Thadeosaurus'' share a common ancestor. History and discovery ''Claudiosaurus'' is known from the Sakamena Formation of Madagascar. ''Claudiosaurus'' is found from the Late Permian. Although a paper mentions that they have been also found in Early Triassic deposits of Madagascar, citation does not mention that ''Claudiosaurus'' is from Triassic. Biology and description ''Claudiosaurus'' was one of the first members of the Neodiapsida, a group of reptiles containing diapsids more derived than the primitive Araeoscelidia. It had a relatively long body and neck, reaching on overall length of about . It is presumed to have been partially oceanic, living its life in a way similar to the modern marine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scallop
Scallop () is a common name that encompasses various species of marine bivalve mollusks in the taxonomic family Pectinidae, the scallops. However, the common name "scallop" is also sometimes applied to species in other closely related families within the superfamily Pectinoidea, which also includes the thorny oysters. Scallops are a cosmopolitan family of bivalves found in all of the world's oceans, although never in fresh water. They are one of the very few groups of bivalves to be primarily "free-living", with many species capable of rapidly swimming short distances and even migrating some distance across the ocean floor. A small minority of scallop species live cemented to rocky substrates as adults, while others attach themselves to stationary or rooted objects such as seagrass at some point in their lives by means of a filament they secrete called a byssal thread. The majority of species, however, live recumbent on sandy substrates, and when they sense the presence of a p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolution
Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes, which are passed on from parent to offspring during reproduction. Variation tends to exist within any given population as a result of genetic mutation and recombination. Evolution occurs when evolutionary processes such as natural selection (including sexual selection) and genetic drift act on this variation, resulting in certain characteristics becoming more common or more rare within a population. The evolutionary pressures that determine whether a characteristic is common or rare within a population constantly change, resulting in a change in heritable characteristics arising over successive generations. It is this process of evolution that has given rise to biodiversity at every level of biological organisation, including the levels of species, individual organisms, and molecules. The theory of evolution by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gorgosaurus
''Gorgosaurus'' ( ; ) is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period (Campanian), between about 76.6 and 75.1 million years ago. Fossil remains have been found in the Canadian province of Alberta and the U.S. state of Montana. Paleontologists recognize only the type species, ''G. libratus'', although other species have been erroneously referred to the genus. Like most known tyrannosaurids, ''Gorgosaurus'' was a large bipedal predator, measuring in length and in body mass. Dozens of large, sharp teeth lined its jaws, while its two-fingered forelimbs were comparatively small. ''Gorgosaurus'' was most closely related to ''Albertosaurus'', and more distantly related to the larger ''Tyrannosaurus''. ''Gorgosaurus'' and ''Albertosaurus'' are extremely similar, distinguished mainly by subtle differences in the teeth and skull bones. Some experts consider ''G. libratus'' to be a species of ''Albertosaurus''; thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beaux-Arts Architecture
Beaux-Arts architecture ( , ) was the academic architectural style taught at the École des Beaux-Arts in Paris, particularly from the 1830s to the end of the 19th century. It drew upon the principles of French neoclassicism, but also incorporated Renaissance and Baroque elements, and used modern materials, such as iron and glass. It was an important style in France until the end of the 19th century. History The Beaux-Arts style evolved from the French classicism of the Style Louis XIV, and then French neoclassicism beginning with Style Louis XV and Style Louis XVI. French architectural styles before the French Revolution were governed by Académie royale d'architecture (1671–1793), then, following the French Revolution, by the Architecture section of the Académie des Beaux-Arts. The Academy held the competition for the Grand Prix de Rome in architecture, which offered prize winners a chance to study the classical architecture of antiquity in Rome. The formal neoclassicism ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
