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Kwanasaurus Maxillae 1
''Kwanasaurus'' is an extinct genus of silesaurid dinosauromorph reptiles from the Late Triassic of Colorado. It is known from a single species, ''Kwanasaurus williamparkeri''. ''Kwanasaurus'' had a deeper, stronger skull and greater specialization for herbivory compared to other silesaurids. It also possessed many unique characteristics of the snout, ilium, and lower part of the femur. It was described along with new specimens of ''Dromomeron'' from the Eagle Basin, the northernmost extent of the Chinle Formation. Discovery ''Kwanasaurus'' hails from Triassic deposits in the Eagle Basin surrounding the town of Eagle, Colorado. This area contains the most northern exposures of the Chinle Formation, which is famous for its Late Triassic fossils of dinosaurs and other reptiles. Tentative terrestrial reptile biostratigraphy estimates that the Eagle Basin fossils, which were preserved in red siltstone, belong to the Revueltian biozone of the mid to late Norian stage of the Triass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Triassic
The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. The corresponding series (stratigraphy), series of rock beds is known as the Upper Triassic. The Late Triassic is divided into the Carnian, Norian and Rhaetian Geologic time scale, Ages. Many of the first dinosaurs evolved during the Late Triassic, including ''Plateosaurus'', ''Coelophysis'', and ''Eoraptor''. The Triassic–Jurassic extinction event began during this epoch and is one of the five major mass extinction events of the Earth. Etymology The Triassic was named in 1834 by Friedrich August von Namoh, Friedrich von Alberti, after a succession of three distinct rock layers (Greek meaning 'triad') that are widespread in southern Germany: the lower Buntsandstein (colourful sandstone'')'', t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ntawere Formation
The Ntawere Formation is a Middle Triassic (Anisian) geological formation in Zambia, preserving fossils of synapsids, archosaurs, and temnospondyls. Geology Several different facies are present in the Ntawere Formation, reconstructing a floodplain environment. The coarsest facies are trough cross-bedded conglomeratic sandstone full of mineral concretions. These coarse deposits formed in ancient channels such as riverbeds. Another type of facies involves thick beds of mudstone interbedding with thinner layers of fine-grained sandstone, indicating alternating low- and high-energy water flow within the channels. Graded sandstone to mudstone overbank deposits (complete with ripple marks) occur near channel deposits. Extensive successions of laminated or massive mudstone are common, often containing slickensides, calcareous nodules or layers (marls), and/or hematite nodules. These types of thick mud/marl layers likely formed in more quiet parts of the floodplain isolated from turbu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silesaurus
''Silesaurus'' is a genus of silesaurid dinosauriform from the Late Triassic, of what is now Poland. Discovery Fossilized remains of ''Silesaurus'' have been found in the Keuper Claystone in Krasiejów near Opole, Silesia, Poland, which is also the origin of its name. The type species, ''Silesaurus opolensis'', was described by Jerzy Dzik in 2003. It is known from some 20 skeletons, making it one of the best-represented species of early dinosauriformes. Description ''Silesaurus'' measured approximately in length. Lightly built, it was probably a fast and agile animal with an active lifestyle. The snout was narrow with forward-pointing nostrils, and the large orbits likely provided ''Silesaurus'' with acute vision. Initially, ''Silesaurus'' was thought to be strictly herbivorous, but later research on coprolite contents indicates that it may have been insectivorous, feeding on insects such as the beetle '' Triamyxa''. The teeth of the animal were small, conical, and serrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thyreophora
Thyreophora ("shield bearers", often known simply as "armored dinosaurs") is a group of armored ornithischian dinosaurs that lived from the Early Jurassic until the end of the Cretaceous. Thyreophorans are characterized by the presence of body armor lined up in longitudinal rows along the body. Primitive forms had simple, low, keeled scutes or osteoderms, whereas more derived forms developed more elaborate structures including spikes and plates. Most thyreophorans were herbivorous and had relatively small brains for their body size. Thyreophora includes various subgroups, including the suborders Ankylosauria and Stegosauria. In both the suborders, the forelimbs were much shorter than the hindlimbs, particularly in stegosaurs. The clade has been defined as the group consisting of all species more closely related to ''Ankylosaurus'' than to ''Triceratops''. Thyreophora is the sister group of Cerapoda within Genasauria. Groups of thyreophorans Basal thyreophorans Basal thyreop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxilla
The maxilla (plural: ''maxillae'' ) in vertebrates is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. The two maxillary bones are fused at the intermaxillary suture, forming the anterior nasal spine. This is similar to the mandible (lower jaw), which is also a fusion of two mandibular bones at the mandibular symphysis. The mandible is the movable part of the jaw. Structure In humans, the maxilla consists of: * The body of the maxilla * Four processes ** the zygomatic process ** the frontal process of maxilla ** the alveolar process ** the palatine process * three surfaces – anterior, posterior, medial * the Infraorbital foramen * the maxillary sinus * the incisive foramen Articulations Each maxilla articulates with nine bones: * two of the cranium: the frontal and ethmoid * seven of the face: the nasal, zygomatic, lacrimal, inferior n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kwanasaurus Maxillae 1
''Kwanasaurus'' is an extinct genus of silesaurid dinosauromorph reptiles from the Late Triassic of Colorado. It is known from a single species, ''Kwanasaurus williamparkeri''. ''Kwanasaurus'' had a deeper, stronger skull and greater specialization for herbivory compared to other silesaurids. It also possessed many unique characteristics of the snout, ilium, and lower part of the femur. It was described along with new specimens of ''Dromomeron'' from the Eagle Basin, the northernmost extent of the Chinle Formation. Discovery ''Kwanasaurus'' hails from Triassic deposits in the Eagle Basin surrounding the town of Eagle, Colorado. This area contains the most northern exposures of the Chinle Formation, which is famous for its Late Triassic fossils of dinosaurs and other reptiles. Tentative terrestrial reptile biostratigraphy estimates that the Eagle Basin fossils, which were preserved in red siltstone, belong to the Revueltian biozone of the mid to late Norian stage of the Triass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bill Parker (paleontologist)
Bill Parker may refer to: * Bill Parker (comics) (1911–1963), American comic book writer, created Captain Marvel in 1940 * Bill Parker (inventor), artist and inventor of the plasma lamp * Bill Parker (Neighbours), fictional character on the Australian soap opera, ''Neighbours'' See also * Billy Parker (other) * William Parker (other) {{hndis, Parker, Bill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ute People
Ute () are the Indigenous people of the Ute tribe and culture among the Indigenous peoples of the Great Basin. They had lived in sovereignty in the regions of present-day Utah and Colorado in the Southwestern United States for many centuries until European settlers conquered their lands. The state of Utah is named after the Ute tribe. In addition to their ancestral lands within Colorado and Utah, their historic hunting grounds extended into current-day Wyoming, Oklahoma, Arizona, and New Mexico. The tribe also had sacred grounds outside their home domain that were visited seasonally. There were 12 historic bands of Utes. Although they generally operated in family groups for hunting and gathering, the communities came together for ceremonies and trading. Many Ute bands were culturally influenced by neighboring Native American tribes and Puebloans, whom they traded with regularly. After contact with early European colonists, such as the Spanish, the Ute formed trading relatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryan J
Bryan may refer to: Places United States * Bryan, Arkansas * Bryan, Kentucky * Bryan, Ohio * Bryan, Texas * Bryan, Wyoming, a ghost town in Sweetwater County in the U.S. state of Wyoming * Bryan Township (other) Facilities and structures * Bryan House (other) * Bryan Boulevard, Greensboro, North Carolina, USA; a limited access highway * Bryan Museum, Galveston, Texas, USA; a museum * Bryan Tower, Dallas, Texas, USA; an office tower skyscraper People *Bryan (given name), list of people with this name *Bryan (surname), list of people with this name * Justice Bryan (other), judges named Bryan * Baron Bryan, a baronial title of Plantagenet England Other uses * Bryan University, Tempe, Arizona, USA; a for-profit private university See also * * * "Bryan, Bryan, Bryan, Bryan", a 1919 poem by Vachel Lindsay * Bryan Inc. (2015 TV series) construction and renovation TV series starring Bryan Baeumler * Bryan, Brown & Company, a footwear company * Bryan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeffrey W
Jeffrey may refer to: * Jeffrey (name), including a list of people with the name * ''Jeffrey'' (1995 film), a 1995 film by Paul Rudnick, based on Rudnick's play of the same name * ''Jeffrey'' (2016 film), a 2016 Dominican Republic documentary film *Jeffrey's, Newfoundland and Labrador, Canada *Jeffrey City, Wyoming, United States *Jeffrey Street, Sydney, Australia * Jeffrey's sketch, a sketch on American TV show ''Saturday Night Live'' *'' Nurse Jeffrey'', a spin-off miniseries from the American medical drama series ''House, MD'' *Jeffreys Bay, Western Cape, South Africa People with the surname * Alexander Jeffrey (1806–1874), Scottish solicitor and historian * Charles Jeffrey (footballer) (died 1915), Scottish footballer * E. C. Jeffrey (1866–1952), Canadian-American botanist *Grant Jeffrey (1948–2012), Canadian writer *Hester C. Jeffrey (1842–1934), American activist, suffragist and community organizer *Richard Jeffrey (1926–2002), American philosopher, logician, and pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humerus
The humerus (; ) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The humeral upper extremity consists of a rounded head, a narrow neck, and two short processes (tubercles, sometimes called tuberosities). The body is cylindrical in its upper portion, and more prismatic below. The lower extremity consists of 2 epicondyles, 2 processes (trochlea & capitulum), and 3 fossae (radial fossa, coronoid fossa, and olecranon fossa). As well as its true anatomical neck, the constriction below the greater and lesser tubercles of the humerus is referred to as its surgical neck due to its tendency to fracture, thus often becoming the focus of surgeons. Etymology The word "humerus" is derived from la, humerus, umerus meaning upper arm, shoulder, and is linguistically related to Gothic ''ams'' shoulder and Greek ''ōmos''. Structure Upper extremity The upper or pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
