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Dingavis
''Dingavis'' is an extinct genus of ornithuromorph bird from the Early Cretaceous of present-day China. It contains a single species, ''D. longimaxilla''. Discovery and naming At Sihedang in Liaoning a fossil bird skeleton was excavated. Catalogued as IVPP V20284, it was found in a layer of the Yixian Formation dating from the Aptian. It consists of an almost complete and associated skeleton with skull, compressed on a plate. It preserves feather remains at the neck. About forty gastroliths have been preserved. It represents an adult individual. The specimen was acquired by the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing. The piece was prepared by Li Dahang. In 2015 the type species ''Dingavis longimaxilla'' was named and described by Jingmai O'Connor, Wang Min and Hu Han. The generic name combines the name of Ding Wenjiang, the "Father of Chinese Geology", with a Latin ''avis'', "bird". The specific name is derived from the Latin ''longus'', "l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juehuaornis
''Juehuaornis'' is an extinct genus of ornithuromorph bird from the Early Cretaceous of present-day China. It contains a single species, ''J. zhangi''. Discovery and naming The holotype, SJG 00001, was found near Lingyuan in a layer of the Jiufotang Formation dating from the Aptian. It consists of an almost complete and associated skeleton with skull, compressed on a plate. It preserves feather remains. The counterplate was designated as the paratype with inventory number SJG 00001A. In 2015 the type species ''Juehuaornis zhangi'' was named and described by Wang Ren-fe, Wang Yan and Hu Dongyu. The generic name combines a reference to the island of Juehua, the "'' Chrysanthemum'' Island" off the coast of Liaoning, with a Greek ὄρνις, ''ornis'', "bird". The specific name honours curator Zhang Dayong. Description ''Juehuaornis'' has a long beak which reaches 70% of the total skull length. Classification ''Juehuaornis'' was placed in the Ornithuromorpha in 2015. In 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithuromorpha
Euornithes (from Greek ' meaning "true birds") is a natural group which includes the most recent common ancestor of all avialans closer to modern birds than to ''Sinornis''. Description Clarke ''et al''. (2006) found that the most primitive known euornithians (the Yanornithiformes) had a mosaic of advanced and primitive features. These species retained primitive features like gastralia and a pubic symphysis. They also showed the first fully modern pygostyles, and the type specimen of ''Yixianornis'' (IVPP 13631) preserves eight elongated rectrices (tail feathers) in a modern arrangement. No earlier pygostylians are known which preserve a fan of tail feathers of this sort; instead, they showed only paired plumes or a tuft of short feathers. Classification The name Euornithes has been used for a wide variety of avialan groups since it was first named by Edward Drinker Cope in 1889. It was first defined as a clade in 1998 by Paul Sereno, who made it the group of all animals close ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aptian
The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 1.0 Ma to 113.0 ± 1.0 Ma (million years ago), approximately. The Aptian succeeds the Barremian and precedes the Albian, all part of the Lower/Early Cretaceous. The Aptian partly overlaps the upper part of the Western European Urgonian Stage. The Selli Event, also known as OAE1a, was one of two oceanic anoxic events in the Cretaceous Period, which occurred around 120 Ma and lasted approximately 1 to 1.3 million years. The Aptian extinction was a minor extinction event hypothesized to have occurred around 116 to 117 Ma.Archangelsky, Sergio.The Ticó Flora (Patagonia) and the Aptian Extinction Event" ''Acta Paleobotanica'' 41(2), 2001, pp. 115-22. Stratigraphic definitions The Aptian was named after the small city of Apt in the Provence region of France, which is also known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wang Min (palaeontologist) (1904–1974), Chinese Communist leader
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Wang Min may refer to: * Wang Min (born 1950), former Communist Party Secretary of Liaoning Province, China * Wang Min (born 1956), politician from Shandong Province and former Party Secretary of Jinan, investigated for corruption * Wang Min (handballer) (born 1980), Chinese handball player * Wang Min (rower) (born 1990), Chinese rower See also * Wangmin Township (王民乡), a township in Xiji County, Ningxia, China *Min Kingdom (907/909–945), a Five Dynasties period state ruled by the Wang family, infrequently referred to as Wang Min (王閩) *Wang Ming Wang may refer to: Names * Wang (surname) (王), a common Chinese surname * Wāng (汪), a less common Chinese surname * Titles in Chinese nobility * A title in Korean nobility * A title in Mongolian nobility Places * Wang River in Thail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Birds Of Asia
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now- extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Changzuiornis
''Changzuiornis'' is an extinct genus of ornithuromorph bird from the Early Cretaceous of present-day China. It contains a single species, ''C. ahgmi''. Discovery and naming At Sihedang near Lingyuan in Liaoning, a bird skeleton was excavated which was acquired by the ''Anhui Gushengwu Bowugan'', the paleontological museum of Anhui. In 2016 the type species ''Changzuiornis ahgmi'' was named and described by Huang Jiandong, Wang Xia, Hu Yuanchao, Liu Jia, Jennifer A. Peteya and Julia A. Clarke. The generic name combines the Chinese ''chángzuì'', "the longest", a reference to the long beak, with a Greek ὄρνις, ''ornis'', "bird". The specific name is the Latin genitive of the acronym AHGM, the Anhui Geological Museum. The holotype, AGB5840, was found in a layer of the Jiufotang Formation dating from the Aptian. It consists of an almost complete and associated skeleton with skull, compressed on a plate. It preserves feather remains and gastroliths. It represents an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogenetic Nomenclature
Phylogenetic nomenclature is a method of nomenclature for taxa in biology that uses phylogenetic definitions for taxon names as explained below. This contrasts with the traditional approach, in which taxon names are defined by a '' type'', which can be a specimen or a taxon of lower rank, and a description in words. Phylogenetic nomenclature is currently regulated by the '' International Code of Phylogenetic Nomenclature'' (''PhyloCode''). Definitions Phylogenetic nomenclature ties names to clades, groups consisting of an ancestor and all its descendants. These groups can equivalently be called monophyletic. There are slightly different ways of specifying the ancestor, which are discussed below. Once the ancestor is specified, the meaning of the name is fixed: the ancestor and all organisms which are its descendants are included in the named taxon. Listing all these organisms (i.e. providing a full circumscription) requires the full phylogenetic tree to be known. In practice, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastrolith
A gastrolith, also called a stomach stone or gizzard stone, is a rock held inside a gastrointestinal tract. Gastroliths in some species are retained in the muscular gizzard and used to grind food in animals lacking suitable grinding teeth. In other species the rocks are ingested and pass through the digestive system and are frequently replaced. The grain size depends upon the size of the animal and the gastrolith's role in digestion. Other species use gastroliths as ballast.Rondeau, et aLarval Anurans Adjust Buoyancy in Response to Substrate IngestionCopeia: February 2005, Vol. 2005, No. 1, pp. 188-195. Particles ranging in size from sand to cobble have been documented. Etymology Gastrolith comes from the Greek γαστήρ (''gastēr''), meaning "stomach", and λίθος (''lithos''), meaning "stone". Occurrence Among living vertebrates, gastroliths are common among crocodiles, alligators, herbivorous birds, seals and sea lions. Domestic fowl require access to ''grit''. Stone ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Specific Name (zoology)
In zoological nomenclature, the specific name (also specific epithet or species epithet) is the second part (the second name) within the scientific name of a species (a binomen). The first part of the name of a species is the name of the genus or the generic name. The rules and regulations governing the giving of a new species name are explained in the article species description. For example, the scientific name for humans is ''Homo sapiens'', which is the species name, consisting of two names: ''Homo'' is the " generic name" (the name of the genus) and ''sapiens'' is the "specific name". Historically, ''specific name'' referred to the combination of what are now called the generic and specific names. Carl Linnaeus, who formalized binomial nomenclature, made explicit distinctions between specific, generic, and trivial names. The generic name was that of the genus, the first in the binomial, the trivial name was the second name in the binomial, and the specific the proper term fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latin
Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the Roman Republic it became the dominant language in the Italian region and subsequently throughout the Roman Empire. Even after the fall of Western Rome, Latin remained the common language of international communication, science, scholarship and academia in Europe until well into the 18th century, when other regional vernaculars (including its own descendants, the Romance languages) supplanted it in common academic and political usage, and it eventually became a dead language in the modern linguistic definition. Latin is a highly inflected language, with three distinct genders (masculine, feminine, and neuter), six or seven noun cases (nominative, accusative, genitive, dative, ablative, and vocative), five declensions, four verb conjug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ding Wenjiang
Ding Wenjiang ( Chinese: 丁文江; March 20, 1887 – January 5, 1936), courtesy name Zaijun, was a Chinese essayist, geologist, and writer active especially in the Republic of China (1912–49). In his own time, his name was transcribed as either V.K. Ting, or Ting Wen-chiang. Biography Early life Ding was born into a wealthy family in Taixing, Jiangsu Province. He went to study in Japan in 1902, and later studied in Britain, majoring in zoology and geology. In 1911, Ding graduated from the University of Glasgow. After returning to China, he taught at Nanyang Public School (now Shanghai Jiao Tong University) in Shanghai. In 1913, Ding became the geological section chief in the Mining Administrative Bureau of the Ministry of Industry and Commerce, and went to Shanxi and Yunnan, conducting geological and mineral exploitation. National Geological Survey Together with Wong Wen-hao ( Weng Wenhao in pinyin), Ding was also the founder of China's new National Geological Survey, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
