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Jaculinykus
''Jaculinykus'' (meaning "Jaculus claw") is an extinct genus of alvarezsaurid theropod dinosaur from the Late Cretaceous Baruungoyot Formation of Mongolia. The genus contains a Monotypic taxon, single species, ''J. yaruui'', known from a nearly complete articulated skeleton including bones of the skull. ''Jaculinykus'' is notable for its unique hand, which has a hypertrophied first digit and greatly reduced second digit, which is intermediate between the tridactyl hand of ''Shuvuuia'' and monodactyl hand of ''Linhenykus''. Discovery and naming The ''Jaculinykus'' holotype specimen, Mongolian Academy of Sciences, MPC-D 100/209, was discovered in sediments of the Baruungoyot Formation (Nemegt locality), of Ömnögovi Province, Mongolia. The specimen consists of a nearly complete skeleton with most of the skull. In 2023, Kubo ''et al''. Species description, described ''Jaculinykus yaruui'' as a new genus and species of parvicursorine alvarezsaurid based on these fossil remains. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaculinykus Yaruui
''Jaculinykus'' (meaning "Jaculus claw") is an extinct genus of alvarezsaurid theropod dinosaur from the Late Cretaceous Baruungoyot Formation of Mongolia. The genus contains a single species, ''J. yaruui'', known from a nearly complete articulated skeleton including bones of the skull. ''Jaculinykus'' is notable for its unique hand, which has a hypertrophied first digit and greatly reduced second digit, which is intermediate between the tridactyl hand of ''Shuvuuia'' and monodactyl hand of ''Linhenykus''. Discovery and naming The ''Jaculinykus'' holotype specimen, MPC-D 100/209, was discovered in sediments of the Baruungoyot Formation (Nemegt locality), of Ömnögovi Province, Mongolia. The specimen consists of a nearly complete skeleton with most of the skull. In 2023, Kubo ''et al''. described ''Jaculinykus yaruui'' as a new genus and species of parvicursorine alvarezsaurid based on these fossil remains. The generic name, "''Jaculinykus''", combines a reference to the Ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baruungoyot Formation
The Baruungoyot Formation (also known as Barun Goyot) is a geological formation dating to the Late Cretaceous Period. It is located within and is widely represented in the Gobi Desert Basin, in the Ömnögovi Province of Mongolia. Description It was previously known as the Lower Nemegt Beds occurring beneath the Nemegt Formation and above the Djadokhta Formation. It has been suggested that the Djadokhta and Baruungoyot Formations are lower and upper parts, respectively, of the same lithological unit and the boundary between the two does not exist. The stratotype of the Baruungoyot Formation is the Khulsan locality, east of Nemegt. At Nemegt, only the uppermost barungoyotian beds are visible. The ''Red Beds of Khermeen Tsav'' are also considered part of the Baruungoyot Formation. It is approximately in thickness,Gradzinski, R.; & Jerzykiewicz, T. (1974). Sedimentation of the Barun Goyot formation. Palaeontologica Polonica, 30, 111-146. and was laid down roughly 72-71 mill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2023 In Archosaur Paleontology
This article records new taxa of every kind of fossil archosaur that were scheduled to be Binomial nomenclature, described during 2023, as well as other significant discoveries and events related to the paleontology of archosaurs that were published in 2023. Pseudosuchians New pseudosuchian taxa General pseudosuchian research * Evidence of the impact of the interplay of abiotic and biotic processes on the evolution of pseudosuchians is presented by Payne ''et al.'' (2023). * A study on the biomechanical properties of the skull of ''Riojasuchus, Riojasuchus tenuisceps'' is published by Taborda, Von Baczko & Desojo (2023), who propose that ''R. tenuisceps'' could have had a wading habit, feeding on small-sizey prey caught from the shoreline. * A study on the bone histology of ''Decuriasuchus, Decuriasuchus quartacolonia'' is published by Farias ''et al.'' (2023), who interpret their findings as indicative of early ontogenetic stage of known specimens, which might have stay ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplocheirus
''Haplocheirus'' (, meaning "simple hand") is an extinct genus of theropod dinosaur from the Middle Jurassic Shishugou Formation of Xinjiang in China. It is generally considered to be an alvarezsauroid, although some researchers have questioned this assignment. The genus contains a single species, ''H. sollers'', which is known from a mostly complete skeleton including the skull. The quality of the preservation in the only known specimen of ''Haplocheirus'' is near-perfect and preserves the animal in three dimensions. This makes ''Haplocheirus'' one of the most well-known Jurassic coelurosaurs from anywhere in the world. The specimen has been relatively well-studied in comparison with other comparable taxa like '' Zuolong'' or '' Guanlong'', which has allowed researchers to gain insights into the evolution of maniraptorans as well as the sensory capabilities, diet, and ontogeny of primitive coelurosaurs. Discovery The type and only specimen of ''Haplocheirus'' was given t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parvicursorinae
Alvarezsauridae is a family of small, long-legged dinosaurs. Although originally thought to represent the earliest known flightless birds, they are now thought to be an early diverging branch of maniraptoran theropods. Alvarezsaurids were highly specialized. They had tiny but stout forelimbs, with compact, bird-like hands. Their skeletons suggest that they had massive breast and arm muscles, possibly adapted for digging or tearing. They had long, tube-shaped snouts filled with tiny teeth. They have been interpreted as myrmecophagous, adapted to prey on colonial insects such as termites, with the short arms acting as effective digging instruments to break into nests. '' Alvarezsaurus'', the type genus of the family, was named for the historian Gregorio Álvarez. History of study Bonaparte (1991) described the first alvarezsaurid, '' Alvarezsaurus calvoi'', from an incomplete skeleton found in Patagonia, Argentina. Bonaparte also named a family, Alvarezsauridae, to contain it. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aorun
''Aorun'' () (敖闰 pinyin Áo rùn) is a genus of carnivorous theropod dinosaur first discovered in 2006, with its scientific Taxonomy (biology), description published in 2013. It is generally considered one of the oldest known coelurosaurian dinosaurs and is estimated to have lived ~161.6 million years ago during the Late Jurassic period (geology), Period, though some researchers consider it to be a carnosaurian instead. Discovery and naming The fossil which included the skull with numerous teeth, some vertebrae and leg bones were discovered by James Clark, the Ronald B. Weintraub Professor of Biology, in the Department of Biological Sciences of GW's Columbian College of Arts and Sciences with his then doctoral student Jonah Choiniere, along with a team of international researchers in a remote region of Xinjiang in China in 2006. They originally spotted a portion of a leg bone exposed on the surface, and when they dug it up, they found the skull underneath. The type species ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvarezsauridae
Alvarezsauridae is a family of small, long-legged dinosaurs. Although originally thought to represent the earliest known flightless birds, they are now thought to be an early diverging branch of maniraptoran theropods. Alvarezsaurids were highly specialized. They had tiny but stout forelimbs, with compact, bird-like hands. Their skeletons suggest that they had massive breast and arm muscles, possibly adapted for digging or tearing. They had long, tube-shaped snouts filled with tiny teeth. They have been interpreted as myrmecophagous, adapted to prey on colonial insects such as termites, with the short arms acting as effective digging instruments to break into nests. '' Alvarezsaurus'', the type genus of the family, was named for the historian Gregorio Álvarez. History of study Bonaparte (1991) described the first alvarezsaurid, '' Alvarezsaurus calvoi'', from an incomplete skeleton found in Patagonia, Argentina. Bonaparte also named a family, Alvarezsauridae, to contain it. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaculus
The jaculus (or iaculus, pl. ''jaculi'', meaning "thrown" in Latin) is a small mythical serpent or dragon. It can be shown with wings and sometimes has front legs. It is also sometimes known as the javelin snake. In Greek mythology It was said that the jaculus hid in the trees and sprang out at its victims. The force of it launching itself at the victim led to the association with javelins. Pliny described it as follows: "The jaculus darts from the branches of trees; and it is not only to our feet that the serpent is formidable, for these fly through the air even, just as though they were hurled from an engine." Lucan also describes the attack of the jaculus in the ''Pharsalia''. He explains that it is the wound caused by the jaculus hitting the victim that causes death. The jaculus does not kill with venom. This is similar to Malagasy folklore concerning the fandrefiala, identified with '' Ithycyphus miniatus'', a small snake with v-shaped markings on its head resembling a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bannykus
''Bannykus'' is an alvarezsaur from the Early Cretaceous of the Bayin-Gobi Formation of Inner Mongolia, China. It includes one species, ''Bannykus wulatensis''. Discovery The holotype of ''Bannykus wulatensis'' is IVPP V25026, a partially-articulated incomplete skeleton of an 8 year old subadult. The holotype comes from the Bayin-Gobi Formation in Chaoge, Wulatehouqi, Inner Mongolia, China. It was discovered in 2009 and in 2012, its remains were displayed in Japan under the unofficial name "Wulatesaurus". It was given the binomial name ''Bannykus wulatensis'' in 2018; its generic name comes from the Mandarin word ''Ban'' ( zh, c=半), meaning half, and the Greek word , meaning claw. This refers to the transitional characteristics seen in this theropod. The specific name refers to Wulatehouqi (Wulate Rear Banner), the county that the holotype was found in. Description ''Bannykus'' is large for an alvarezsaurian theropod, with an estimated length of and body mass of approxi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greek Language
Greek (, ; , ) is an Indo-European languages, Indo-European language, constituting an independent Hellenic languages, Hellenic branch within the Indo-European language family. It is native to Greece, Cyprus, Italy (in Calabria and Salento), southern Albania, and other regions of the Balkans, Caucasus, the Black Sea coast, Asia Minor, and the Eastern Mediterranean. It has the list of languages by first written accounts, longest documented history of any Indo-European language, spanning at least 3,400 years of written records. Its writing system is the Greek alphabet, which has been used for approximately 2,800 years; previously, Greek was recorded in writing systems such as Linear B and the Cypriot syllabary. The Greek language holds a very important place in the history of the Western world. Beginning with the epics of Homer, ancient Greek literature includes many works of lasting importance in the European canon. Greek is also the language in which many of the foundational texts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xiyunykus
''Xiyunykus'' (meaning "western claw"; "xiyu" is Mandarin for "west" and refers to Western China where it was found) is an alvarezsaur from the Early Cretaceous of the Tugulu Group of China. It includes one species, ''Xiyunykus pengi''. Paleoecology Dinosaurs contemporaneous with ''Xiyunykus'' in the Tugulu Group of Xinjiang include the stegosaur ''Wuerhosaurus'', the coeval alvarezsaur ''Tugulusaurus'', the carcharodontosaurid ''Kelmayisaurus'', the dubious maniraptoran '' Phaedrolosaurus'', the problematic coelurosaur '' Xinjiangovenator'', and the ceratopsian ''Psittacosaurus xinjiangensis''. Evolutionary significance ''Xiyunykus'', along with '' Bannykus'', fills a 70-million year gap in alvarezsaur evolution by exhibiting cranial and postcranial morphologies intermediate between the typical theropod forelimb of ''Haplocheirus ''Haplocheirus'' (, meaning "simple hand") is an extinct genus of theropod dinosaur from the Middle Jurassic Shishugou Formation of Xinjiang in Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
