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Duonychus
''Duonychus'' (meaning "two claws") is an extinct genus of therizinosaurid theropod dinosaurs that lived during the Late Cretaceous (Cenomanian to early Coniacian age) of what is now Mongolia. It is known from a partial skeleton, including several vertebrae, most of the forelimbs, and part of the pelvic girdle, found in outcrops of the Bayanshiree Formation. The remains were discovered in 2012 by the Mongolian Academy of Sciences and briefly mentioned in later Academic conference, conference Abstract (summary), abstracts. The genus contains a monotypic taxon, single species, ''Duonychus tsogtbaatari'', which was formally described in 2025. The hand of ''Duonychus'' only has two fingers, similar to Tyrannosauridae, tyrannosaurids, compared to the three commonly found in most theropods. This anatomical feature—in addition to its long, strongly curved claws—may have allowed ''Duonychus'' to efficiently grasp plant material to consume. The geological formation from which ''Duonyc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2025 In Archosaur Paleontology
This article records new taxa of fossil Archosaur, archosaurs of every kind that are scheduled Binomial nomenclature, described during the year 2025, as well as other significant discoveries and events related to paleontology of archosaurs that are scheduled to occur in the year 2025. Pseudosuchians New pseudosuchian taxa General pseudosuchian research * Fitch, Kammerer & Sterling Nesbitt, Nesbitt (2025) describe Femur, femora of Poposauroidea, poposauroids similar to ''Poposaurus, Poposaurus gracilis'' from the Cumnock Formation, Cumnock and Pekin Formation, Pekin formations (Chatham Group; North Carolina, United States), expanding known geographical range of Late Triassic poposauroids. * McDavid (2025) discusses the validity and authorship of the name ''Prestosuchus'', considering the name ''Huenesuchus'' a junior synonym. Aetosaur research * A study on the histology of osteoderms of ''Stagonolepis, Stagonolepis olenkae'' is published by Błaszczeć & Antczak (2025). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bayanshiree Formation
The Bayanshiree Formation (also known as Baynshiree/Baynshire, Baynshirenskaya Svita, Baysheen Shireh, or Bayan Shireh) is a geological formation in Mongolia, that dates to the Cretaceous period. It was first described and established by Vasiliev et al. 1959. Description The Bayanshiree Formation is primarily composed by varicoloured claystones and sandstones with calcareous concretions and characterized by grey mudstones and yellowish-brown medium grained sandstones. Up to thick, the most complete sections are found in the eastern Gobi Desert, consisting of fine-grained, often cross-stratified gray sandstone interbedded with claystone and concretionary, intraformational conglomerates with relatively thick units of red to brown mudstone in the upper part. The Baynshire and Burkhant localities are mainly composed by mudstone, siltstone, sandstone, and conglomerates, with most of their sedimentation being fluvial. The environments that were present on the Bayanshiree Formation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yoshitsugu Kobayashi
Yoshitsugu Kobayashi (小林 快次, ''Kobayashi Yoshitsugu'', born 1971) is a Japanese vertebrate paleontologist. He is a professor and the assistant director in Hokkaido University Museum. His major achievements include the description and naming of several dinosaurs from Japan, for example, '' Kamuysaurus'', ''Yamatosaurus'' and '' Paralitherizinosaurus''. He is also a research affiliate of Perot Museum of Nature and Science, a member of Jurassic Foundation, a councilor of . Education Yoshitsugu Kobayashi was born in Fukui Prefecture, Japan. He attended a junior high school attached to the Faculty of Education at the University of Fukui, where he was a member of the science club under an advisor well versed in geology. In junior high school, he was interested in ammonites and spent after-school hours and holidays excavating fossils. After graduating from junior high school, he went on to Fukui Prefectural Koshi High School. During his first year of high school, he participate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Therizinosaurid
Therizinosauridae (meaning 'scythe lizards')Translated paper is an extinct family of derived (advanced) whose fossil remains have been found in mostly boundary. Even though representative fossils have only been found throughout and |
Segnosaurus
''Segnosaurus'' is a genus of therizinosaurid dinosaur that lived in what is now southeastern Mongolia during the Late Cretaceous, about 102–86 million years ago. Multiple incomplete but well-preserved specimens were discovered in the Gobi Desert in the 1970s, and in 1979 the genus and species ''Segnosaurus galbinensis'' were named. The generic name ''Segnosaurus'' means "slow lizard" and the specific name ''galbinensis'' refers to the Galbin region. The known material of this dinosaur includes the lower jaw, neck and tail vertebrae, the pelvis, shoulder girdle, and limb bones. Parts of the specimens have gone missing or become damaged since they were collected. ''Segnosaurus'' was a large-bodied therizinosaur that is estimated to have been about long and to have weighed about . It would have been bipedal, with the trunk of its body tilted upwards. The head was small with a beak at the tip of the jaws, and the neck was long and slender. The lower jaw was down-turned at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yoshitsugu Kobayashi 小林快次
Yoshitsugu is a masculine Japanese given name. Written forms Yoshitsugu can be written using different combinations of kanji characters. Here are some examples: *義次, "justice, next" *義嗣, "justice, succession" *義継, "justice, continue" *吉次, "good luck, filial piety" *吉嗣, "good luck, succession" *吉継, "good luck, continue" *善次, "virtuous, next" *善嗣, "virtuous, succession" *善継, "virtuous, continue" *喜次, "rejoice, next" *喜嗣, "rejoice, succession" *喜継, "rejoice, continue" *芳次, "fragrant/virtuous, next" *芳嗣, "fragrant/virtuous, succession" *芳継, "fragrant/virtuous, continue" *好次, "good/like something, next" *喜次, "rejoice, next" *慶次, "congratulate, next" The name can also be written in hiragana よしつぐ or katakana ヨシツグ. Notable people with the name * Yoshitsugu Nihonmatsu (二本松 義継, 1552–1586), Japanese daimyō of the Sengoku period, 14th head of the Nihonmatsu clan of Mutsu * Yoshitsugu Maeb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society Of Vertebrate Paleontology
The Society of Vertebrate Paleontology (SVP) is a professional organization that was founded in the United States in 1940 to advance the science of vertebrate paleontology around the world. Mission and activities SVP has about 2,300 members internationally and holds annual scientific conferences in North America and elsewhere. It is organized for educational and scientific purposes with a mission to "advance the science of vertebrate paleontology and to serve the common interests and facilitate the cooperation of all persons concerned with the history, evolution, comparative anatomy, and taxonomy of vertebrate animals, as well as field occurrence, collection, and study of fossil vertebrates and the stratigraphy of the beds in which they are found." SVP is also concerned with the conservation and preservation of fossil sites. SVP publications include the '' Journal of Vertebrate Paleontology'', the ''SVP Memoir Series'', the ''News Bulletin'', the''Bibliography of Fossil Vertebrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joint
A joint or articulation (or articular surface) is the connection made between bones, ossicles, or other hard structures in the body which link an animal's skeletal system into a functional whole.Saladin, Ken. Anatomy & Physiology. 7th ed. McGraw-Hill Connect. Webp.274/ref> They are constructed to allow for different degrees and types of movement. Some joints, such as the knee, elbow, and shoulder, are self-lubricating, almost frictionless, and are able to withstand compression and maintain heavy loads while still executing smooth and precise movements. Other joints such as suture (joint), sutures between the bones of the skull permit very little movement (only during birth) in order to protect the brain and the sense organs. The connection between a tooth and the jawbone is also called a joint, and is described as a fibrous joint known as a gomphosis. Joints are classified both structurally and functionally. Joints play a vital role in the human body, contributing to movement, sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil Preparation
Fossil preparation is a complex of tasks that can include excavating, revealing, conserving, and replicating the ancient remains and traces of organisms. It is an integral part of the science of paleontology, of museum exhibition, and the preservation of fossils held in the public trust. It involves a wide variety of techniques, from the mechanical to the chemical, depending upon the qualities of the specimen being prepared and the goals of the effort. Fossil preparation may be executed by scientists, students or collections personnel, but is often undertaken by professional fossil preparators. Techniques Acid maceration Acid maceration is a technique to extract organic matter, organic microfossils from a surrounding matrix (geology), rock matrix using acid. Hydrochloric acid or acetic acid may be used to extract phosphatic fossils, such as the small shelly fossils, from a carbonate matrix. Hydrofluoric acid is also used in acid macerations to extract organic fossils from silicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IScience
Cell Press is an all-science publisher of over 50 scientific journals across the life, physical, earth, and health sciences, both independently and in partnership with scientific societies. Cell Press was founded and is currently based in Cambridge, MA, and has offices across the United States, Europe, and Asia under its parent company Elsevier. History Benjamin Lewin founded ''Cell''. He then bought the title and established an independent Cell Press in 1986. The company spun off new journals as follows: ''Neuron'' in March 1988; ''Immunity'' in April 1994; and ''Molecular Cell'' in December 1997. Benjamin Lewin left in October 1999, after having sold Cell Press to Elsevier the previous April. Since that time, Cell Press has launched a number of new titles: ''Developmental Cell'' in July 2001; ''Cancer Cell'' in February 2002; ''Cell Metabolism'' in January 2005; ''Cell Host & Microbe'' in March 2007; '' Cell Stem Cell'' in July 2007; '' Cell Systems'' in July 2015; ''Heliy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lag Deposit
Lag deposit in Soria, Spain A lag deposit is the deposition of material winnowed by physical action. Aeolian processes, fluvial processes, and tidal processes can remove the finer portion of a sedimentary deposit leaving the coarser material behind. Lag deposits are found in processes such as central island formation in streams and rivers. One theory of desert pavement formation is that they are an aeolian lag deposit. Armored beaches and inlets can be composed in part by lag deposits of shells or cobbles created when tidal forces strip away the finer sand and silt Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension (chemistry), suspension with water. Silt usually .... References {{deposition-geol-stub category:deposition (geology) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
