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Biarmosuchus Tener
''Biarmosuchus'' is an extinct genus of biarmosuchian therapsids that lived around 267 mya during the Middle Permian period. ''Biarmosuchus'' was discovered in the Perm region of Russia. The first specimen was found in channel sandstone that was deposited by flood waters originating from the young Ural Mountains. Description ''Biarmosuchus'' was a medium-sized predator, similar in size to a large dog, grew up to to in length with a skull length (immature) to . It was a lightly built, probably agile animal that would have fed on smaller tetrapods. Their legs are quite long, and the animals were probably quite agile in spite of their size. A large opening for the eye and a small temple opening common in primitive stem-mammals, this lends to a weak bite but how it ate is pure speculation. The teeth contained eight small incisors on the palate, followed by a canine tooth and a further five canine teeth. So together the species contained fourteen upper teeth and twelve lower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wordian
In the geologic timescale, the Wordian is an age or stage of the Permian. It is the middle of three subdivisions of the Guadalupian Epoch or Series. The Wordian lasted between and million years ago (Ma). It was preceded by the Roadian and followed by the Capitanian. Stratigraphy The Wordian Stage was introduced into scientific literature by Johan August Udden in 1916 and was named after the Word Formation of the North American Permian Basin. The Wordian was first used as a stratigraphic subdivision of the Guadalupian in 1961, when both names were still only used regionally in the southern US. The stage was added to the internationally used ISC timescale in 2001.; 1999: ''Proposal of Guadalupian and Component Roadian, Wordian and Capitanian Stages as International Standards for the Middle Permian Series'', Permophiles 34: pp 3–11. The base of the Wordian Stage is defined as the place in the stratigraphic record where fossils of conodont species ''Jinogondolella aserrata'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flood
A flood is an overflow of water (list of non-water floods, or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are of significant concern in agriculture, civil engineering and public health. Environmental issues, Human changes to the environment often increase the intensity and frequency of flooding. Examples for human changes are land use changes such as deforestation and Wetland conservation, removal of wetlands, changes in waterway course or flood controls such as with levees. Global environmental issues also influence causes of floods, namely climate change which causes an Effects of climate change on the water cycle, intensification of the water cycle and sea level rise. For example, climate change makes Extreme weather, extreme weather events more frequent and stronger. This leads to more intense floods and increased flood risk. Natural types of floods include riv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Everett C
Everett may refer to: Places Canada * Everett, Ontario, a community in Adjala–Tosorontio, Simcoe County * Everett Mountains, a range on southern Baffin Island in Nunavut United States * Everett, Massachusetts, in Middlesex County, Massachusetts north of Boston * Everett, Missouri, an unincorporated community * Everett, Nebraska, an unincorporated community * Everett, New Jersey, an unincorporated community * Everett, Ohio, an unincorporated community * Everett, Pennsylvania, in Bedford County, Pennsylvania ** Everett Area School District, a public school district in Bedford Country. * Everett, Washington, the county seat and largest city in Washington state's Snohomish County ** Everett Massacre, an armed confrontation between local authorities and members of the Industrial Workers of the World union ** Boeing Everett Factory, an airplane assembly building owned by Boeing * Everett Township (other), a list of townships named Everett Elsewhere * Everett Range, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Journal Of Geology
''The Journal of Geology'' publishes research on geology, geophysics, geochemistry, sedimentology, geomorphology, petrology, plate tectonics, volcanology, structural geology, mineralogy, and planetary sciences. Its content ranges from planetary evolution to computer modeling of fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ... development, making it relevant to geologists as well as other researchers working in the Earth or planetary sciences. It was established in 1893 by Thomas Chrowder Chamberlin. References External links * English-language journals Bimonthly journals University of Chicago Press academic journals Academic journals established in 1893 Geology journals {{geology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Therapsids
This list of therapsids is an attempt to create a comprehensive listing of all Genus, genera that have ever been included in the Therapsida excluding mammals and purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (''nomen dubium, nomina dubia''), or were not formally published (''nomen nudum, nomina nuda''), as well as synonym (zoology), junior synonyms of more established names, and genera that are no longer considered therapsids. The list currently contains 510 generic names. Naming conventions and terminology Naming conventions and terminology follow the International Code of Zoological Nomenclature. Technical terms used include: * Synonym (zoology), Junior synonym: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type (zoology), type specimens are later assigned to the same genus, the first to be published (in chronological o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phthinosuchus
''Phthinosuchus'' is an extinct genus of therapsids from the Middle Permian of Russia. ''Phthinosuchus'' is the sole member of the family Phthinosuchidae. ''Phthinosuchus'' may have been one of the most primitive therapsids, meaning that its ancestors may have branched off early from the main therapsid line. Discovery ''Phthinosuchus'' was named in 1954 by Ivan Yefremov. It is currently only known from the back of the skull, as the front of the skull was lost after description. Two species, ''P. discors'' and ''P. horissiaki'', have been described. Description ''Phthinosuchus'' was 1.5 m (5 ft) long with a 20 cm skull, and looked much like the Sphenacodontids, such as ''Dimetrodon'' and ''Sphenacodon''. Its temporal fenestrae were larger than those of the Sphenacodontids. Its jaw was slender, unlike other predatory therapsids, but like the other early therapsids, it was probably sprawling and carnivorous. Classification ''Phthinosuchus'' is a member of the subo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Norse Literature
Old Norse literature refers to the vernacular literature of the Scandinavian people up to c. 1350. It mainly consists of Icelandic writings. In Britain From the 8th to the 15th centuries, Vikings and Norse settlers and their descendants colonised parts of what is now modern Scotland. Some Old Norse poetry survives relating to this era. The ''Orkneyinga saga'' (also called the ''History of the Earls of Orkney'') is a historical narrative of the history of the Orkney Islands, from their capture by the Norwegian king in the 9th century onwards until about 1200. 20th-century poet George Mackay Brown was influenced by the saga, notably for his 1973 novel ''Magnus''. The Icelandic ''Njáls saga'' includes actions taking place in Orkney and Wales. Besides these Icelandic sagas a few examples, sometimes fragmentary, of Norse poetry composed in Scotland survive. Among the runic inscriptions at Maeshowe is a text identified as irregular verse. Scandinavian cultural contacts in the Danela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Sea
The White Sea (; Karelian language, Karelian and ; ) is a southern inlet of the Barents Sea located on the northwest coast of Russia. It is surrounded by Karelia to the west, the Kola Peninsula to the north, and the Kanin Peninsula to the northeast. The whole of the White Sea is under Russian sovereignty and considered to be part of the internal waters of Russia.A. D. Dobrovolskyi and B. S. Zalogi"Seas of USSR. White Sea" Moscow University (1982) (in Russian) Administratively, it is divided between the Arkhangelsk Oblast, Arkhangelsk and Murmansk Oblast, Murmansk oblasts and the Republic of Karelia. The Port of Arkhangelsk, major port of Arkhangelsk is located on the White Sea. For much of Russia's history this was Russia's main centre of international maritime trade, conducted by the Pomors ("seaside settlers") from Kholmogory, Arkhangelsk Oblast, Kholmogory. In the modern era it became an important Soviet Union, Soviet naval and submarine base. The White Sea–Baltic Canal co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bjarmaland
Bjarmaland (also spelled ''Bjarmland'' and ''Bjarmia'') was a territory mentioned in sagas from the Viking Age and in geographical accounts until the 16th century. The term is usually understood to have referred to the southern shores of the White Sea and the basin of the Northern Dvina () as well as, presumably, to some of the surrounding areas. Today, those territories comprise a part of the Arkhangelsk Oblast of Russia, as well as the Kola Peninsula. Norse voyagers in Bjarmaland According to the ''Voyage of Ohthere'' (), the Norwegians, Norwegian merchant Ottar from Hålogaland, Ottar (Ohthere) reported to king Alfred the Great that he had sailed for 15 days along the northern coast and then southwards, finally arriving at a great river, probably the Northern Dvina. At the estuary of the river dwelt the ''Beormas'', who unlike the nomadic Sami peoples were sedentary, and their land was rich and populous. Ohthere did not know their language but he said that it resembled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canine Tooth
In mammalian oral anatomy, the canine teeth, also called cuspids, dogteeth, eye teeth, vampire teeth, or fangs, are the relatively long, pointed teeth. In the context of the upper jaw, they are also known as '' fangs''. They can appear more flattened, however, causing them to resemble incisors and leading them to be called ''incisiform''. They developed and are used primarily for firmly holding food in order to tear it apart, and occasionally as weapons. They are often the largest teeth in a mammal's mouth. Individuals of most species that develop them normally have four, two in the upper jaw and two in the lower, separated within each jaw by incisors; humans and dogs are examples. In most species, canines are the anterior-most teeth in the maxillary bone. The four canines in humans are the two upper maxillary canines and the two lower mandibular canines. They are specially prominent in dogs (Canidae), hence the name. Details There are generally four canine teeth: two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palate
The palate () is the roof of the mouth in humans and other mammals. It separates the oral cavity from the nasal cavity. A similar structure is found in crocodilians, but in most other tetrapods, the oral and nasal cavities are not truly separated. The palate is divided into two parts, the anterior, bony hard palate and the posterior, fleshy soft palate (or velum). Structure Innervation The maxillary nerve branch of the trigeminal nerve supplies sensory innervation to the palate. Development The hard palate forms before birth. Variation If the fusion is incomplete, a cleft palate results. Function in humans When functioning in conjunction with other parts of the mouth, the palate produces certain sounds, particularly velar, palatal, palatalized, postalveolar, alveolopalatal, and uvular consonants. History Etymology The English synonyms palate and palatum, and also the related adjective palatine (as in palatine bone), are all from the Latin ''palatum' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incisor
Incisors (from Latin ''incidere'', "to cut") are the front teeth present in most mammals. They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side, top and bottom). Opossums have 18, whereas armadillos, anteaters and other animals in the order Edentata have none. Structure Adult humans normally have eight incisors, two of each type. The types of incisors are: * maxillary central incisor (upper jaw, closest to the center of the lips) * maxillary lateral incisor (upper jaw, beside the maxillary central incisor) * mandibular central incisor (lower jaw, closest to the center of the lips) * mandibular lateral incisor (lower jaw, beside the mandibular central incisor) Children with a full set of deciduous teeth (primary teeth) also have eight incisors, named the same way as in permanent teeth. Young children may have from zero to eight incisors depending on the stage of their tooth eruption and tooth development. Typic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
