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Fenestella (animal)
''Fenestella'' is a genus of bryozoans or moss animals, forming fan–shaped colonies with a netted appearance. It is known from the Middle Ordovician to the early Upper Triassic ( Carnian), reaching its largest diversity during the Carboniferous. Many hundreds of species have been described from marine sediments all over the world. Etymology ''Fenestella'' is Latin, meaning little window, from fenestra "window", for the window-like openings in the mesh of the skeleton of its colonies. Description The skeleton of ''Fenestella'' colonies consists of stiff branches that are interconnected by narrower crossbars (or dissepiments). Between two and eight individuals of the colony inhabit each of the opposing front sides of the approximately rectangular openings between the branches (or fenestule) in one row, and the void they left when they died can be recognized as two rows of small rimmed pores (or apertures) on the front of each branch. In well-preserved specimens these are clo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Couvin
Couvin (; wa, Couvén) is a city and municipality of Wallonia located in the province of Namur, Belgium. On 1 January 2018 the municipality had 13,782 inhabitants. Couvin is the second largest municipality of Belgium by surface area, after Tournai. The total area is , giving a population density of . The municipality consists of the following districts: Aublain, Boussu-en-Fagne, Brûly, Brûly-de-Pesche, Couvin, Cul-des-Sarts, Dailly, Frasnes-lez-Couvin, Gonrieux, Mariembourg, Pesche, Petigny, Petite-Chapelle, and Presgaux. Transport Couvin railway station provides the town with a rail link direct to Charleroi. The line terminates here; the next station is Mariembourg. Tourism There are a number of sites of interest to tourists in the municipality. One end of the Chemin de Fer à vapeur des Trois Vallées heritage railway is at Mariembourg. The ''Brasserie des Fagnes'' brewery is also situated there. Caves in the area include the Trou de l’Abîme and the Neptune ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnian Extinctions
The Carnian (less commonly, Karnian) is the lowermost stage of the Upper Triassic Series (or earliest age of the Late Triassic Epoch). It lasted from 237 to 227 million years ago (Ma). The Carnian is preceded by the Ladinian and is followed by the Norian. Its boundaries are not characterized by major extinctions or biotic turnovers, but a climatic event (known as the Carnian pluvial episode characterized by substantial rainfall) occurred during the Carnian and seems to be associated with important extinctions or biotic radiations. Stratigraphic definitions The Carnian was named in 1869 by Mojsisovics. It is unclear if it was named after the Carnic Alps or after the Austrian region of Carinthia (''Kärnten'' in German) or after the Carnia historical region in northwestern Italy. The name, however, was first used referring to a part of the Hallstatt Limestone cropping out in Austria. The base of the Carnian Stage is defined as the place in the stratigraphic record where t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Ordovician First Appearances
Middle or The Middle may refer to: * Centre (geometry), the point equally distant from the outer limits. Places * Middle (sheading), a subdivision of the Isle of Man * Middle Bay (other) * Middle Brook (other) * Middle Creek (other) * Middle Island (other) * Middle Lake (other) * Middle Mountain, California * Middle Peninsula, Chesapeake Bay, Virginia * Middle Range, a former name of the Xueshan Range on Taiwan Island * Middle River (other) * Middle Rocks, two rocks at the eastern opening of the Straits of Singapore * Middle Sound, a bay in North Carolina * Middle Township (other) * Middle East Music * "Middle" (song), 2015 * "The Middle" (Jimmy Eat World song), 2001 * "The Middle" (Zedd, Maren Morris and Grey song), 2018 *"Middle", a song by Rocket from the Crypt from their 1995 album ''Scream, Dracula, Scream!'' *"The Middle", a song by Demi Lovato from their debut album ''Don't Forget'' *"The Middle", a song by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Bryozoan Genera
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archimedes (bryozoan)
''Archimedes'' is a genus of bryozoans belonging to the family Fenestellidae. The first use of the term "Archimedes" in relation to this genus was in 1838. Etymology This genus of bryozoans is named ''Archimedes'' because of its corkscrew shape, in analogy to the Archimedes' screw, a type of water pump which inspired modern ship propellers in turn named after the ancient greek polymath. These forms are common as fossils but they have been extinct since the Permian. Species *''Archimedes orientalis'' Schulga-Nesterenko 1936 *''Archimedes regina'' Crockford 1947 *''Archimedes stuckenbergi ''Nikiforova 1938 Fossil range These bryozoans lived from the Carboniferous period (Tournaisian age) to the Permian period (Leonard age) (345.3 to 268.0 Ma), when this genus became extinct.Sepkoski, JacSepkoski's Online Genus Database - Bryozoa/ref> Description ''Archimedes'' is a genus of fenestrate bryozoans with a calcified skeleton of a delicate spiral-shaped mesh that was thickened ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
