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Mandschurosaurus
''Mandschurosaurus'' (meaning "lizard from Manchuria") is an extinct genus of hadrosaurs based on material from the Late Cretaceous of China and possibly also the Early Cretaceous of Laos. It was the first dinosaur genus named from China, and a mounted skeleton based on the holotype of ''M. amurensis'' is on display at the Central Geological and Prospecting Museum in St. Petersburg; however, much of the skeleton is plaster. Discovery and naming The holotype of ''M. amurensis'' (IVP AS coll.), the only valid species within the genus, is based on a poorly preserved and incomplete skeleton collected by Russian scientists in 1914 from the banks of the Amur River, China in a layer of the Maastrichtian-aged Yuliangze Formation and the remains represent a large hadrosaurid. ussian/ref> The holotype material was initially referred to the genus ''"Trachodon"'' (a ''nomen dubium'') as ''T. amurense'' by Riabinin (1925),Riabinin, A.N. (1925). A mounted skeleton of the gigantic reptile ''T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gilmoreosaurus
''Gilmoreosaurus'' (meaning "Charles Whitney Gilmore's lizard") is the name given to a genus of dinosaur from the Cretaceous of Asia. The type species is ''Gilmoreosaurus mongoliensis''. It is believed to be a hadrosaur or iguanodont from the Iren Dabasu Formation of Inner Mongolia, dating to 96 Megaannum, Ma ago. Additional specimens have been described as distinct species, including ''G. atavus'' from the Khodzhakul Formation of Uzbekistan (120 Ma ago) and ''G. arkhangelskyi'' from the Bissekty Formation (89 Ma ago). However, these are based on very fragmentary remains, and their classification is dubious. An additional species, ''G. kysylkumense'' (also from the Bissekty Formation) is sometimes included, though it has also been referred to the related genus ''Bactrosaurus''. History of study Asian expeditions and Gilmore's "''Mandschurosaurus mongoliensis''" In the early twentieth century, the American Museum of Natural History (AMNH) conducted a series of palaeontological exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yuliangze Formation
The Yuliangze Formation, or Yuliangzi Formation, is a geological formation in Heilongjiang, China whose strata date back to the early-middle Maastrichtian. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 593-600. . Vertebrate paleofauna * '' Charonosaurus jiayinensis'' - "Partial skull and partial, fragmentary postcranial elements.""Table 20.1," in Weishampel, et al. (2004). Page 441. * ''Mandschurosaurus amurensis'' (Hadrosaurinae indet.) * '' Sahaliyania elunchunorum'' ( Hadrosauridae indet.) * ''Tarbosaurus bataar'' *'' Saurolophus krystofovici'' * '' Wulagasaurus dongi'' See also * List of dinosaur-bearing rock formations This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trachodon
''Trachodon'' (meaning "rough tooth") is a dubious genus of hadrosaurid dinosaur based on teeth from the Campanian-age Upper Cretaceous Judith River Formation of Montana, U.S.Leidy, J. (1856). "Notice of remains of extinct reptiles and fishes, discovered by F. V. Hayden in the Bad Lands of the Judith River, Nebraska Territories." ''Proceedings of the Academy of Natural Science Philadelphia'', 8(25 March): 72–73. It is a historically important genus with a convoluted taxonomy that has been all but abandoned by modern dinosaur paleontologists.Creisler, B.S. (2007). Deciphering duckbills. in: K. Carpenter (ed.), ''Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs''. Indiana University Press: Bloomington and Indianapolis, 185–210. Despite being used for decades as the iconic duckbill dinosaur, the material it is based on is composed of teeth from both duckbills and ceratopsids (their teeth have a distinctive double rootHatcher, J.B., Marsh, O.C. and Lull, R.S. (1907). ''Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grès Supérieurs Formation
The Grès supérieurs Formation (French for "Upper sandstone") is a geological formation in Laos whose strata date back to the Aptian to Albian stages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel et al., pp.563-570 It is equivalent to the Khok Kruat Formation of Thailand. Fossil content The Grès supérieurs Formation has also yielded remains of indeterminate iguanodontians, as well as ornithopod and sauropod tracks. Fish Dinosaurs ;Other fossils * Sauropod tracks * Iguanodontia indet (=Mandschurosaurus laosensis) * Euornithopod tracks See also * List of dinosaur-bearing rock formations This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented. Containing body fossils * List of stratigraphic units with dinosaur body fossils ** List of stratigraphic units with few ... References Bibliography * Further reading ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anatoly Riabinin
Anatoliy Riabinin (11 June 1874-2 February 1942) was a Russian geologist and vertebrate paleontologist. In the 1910s, Riabinin led the first paleontological expeditions to the Amur (in 1914 and 1916–17). The hadrosaurid '' Amurosaurus riabinini'' is named for him. In 1925, he described the first dinosaur from China (though excavated in 1914). It initially bore the name ''Trachodon amurense'', though he renamed it ''Mandschurosaurus'' in 1930. He also conducted studies on fossilised turtles. In 2020, the ornithopod dinosaur genus known as ''Riabininohadros'' was named for him. In 1942, he perished during the Siege of Leningrad. Several of his works were posthumously published in the late 1940s (publications appeared in 1945 and 1946). He thus described ''Batrachognathus ''Batrachognathus'' is an extinct genus of anurognathid pterosaur from the Late Jurassic ( Oxfordian to Kimmeridgian) Karabastau Formation of the central Asian republic of Kazakhstan. The genus was named in 1948 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Dubium
In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a specimen belongs to that group or not. This may happen if the original type series (i. e. holotype, isotype, syntype or paratype) is lost or destroyed. The zoological and botanical codes allow for a new type specimen, or neotype, to be chosen in this case. A name may also be considered a ''nomen dubium'' if its name-bearing type is fragmentary or lacking important diagnostic features (this is often the case for species known only as fossils). To preserve stability of names, the ''International Code of Zoological Nomenclature'' allows a new type specimen, or neotype, to be chosen for a ''nomen dubium'' in this case. 75.5. Replacement of unidentifiable name-bearing type by a neotype. When an author considers that the taxonomic identity of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadrosaurs
Hadrosaurids (), or duck-billed dinosaurs, are members of the ornithischian family Hadrosauridae. This group is known as the duck-billed dinosaurs for the flat duck-bill appearance of the bones in their snouts. The ornithopod family, which includes genera such as ''Edmontosaurus'' and ''Parasaurolophus'', was a common group of herbivores during the Late Cretaceous Period. Hadrosaurids are descendants of the Upper Jurassic/Lower Cretaceous iguanodontian dinosaurs and had a similar body layout. Hadrosaurs were among the most dominant herbivores during the Late Cretaceous in Asia and North America, and during the close of the Cretaceous several lineages dispersed into Europe, Africa, South America and Antarctica. Like other ornithischians, hadrosaurids had a predentary bone and a pubic bone which was positioned backwards in the pelvis. Unlike more primitive iguanodonts, the teeth of hadrosaurids are stacked into complex structures known as dental batteries, which acted as effective g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous Dinosaurs Of Asia
Late may refer to: * LATE, an acronym which could stand for: ** Limbic-predominant age-related TDP-43 encephalopathy, a proposed form of dementia ** Local-authority trading enterprise, a New Zealand business law ** Local average treatment effect, a concept in econometrics Music * ''Late'' (album), a 2000 album by The 77s * Late!, a pseudonym used by Dave Grohl on his ''Pocketwatch'' album * Late (rapper), an underground rapper from Wolverhampton * "Late" (song), a song by Blue Angel * "Late", a song by Kanye West from ''Late Registration'' Other * Late (Tonga), an uninhabited volcanic island southwest of Vavau in the kingdom of Tonga * "Late" (''The Handmaid's Tale''), a television episode * LaTe, Oy Laivateollisuus Ab, a defunct shipbuilding company * Late may refer to a person who is Dead See also * * * ''Lates'', a genus of fish in the lates perch family * Later (other) * Tardiness * Tardiness (scheduling) In scheduling, tardiness is a measure of a delay in exe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Hadrosaur Research
A timeline is a display of a list of events in chronological order. It is typically a graphic design showing a long bar labelled with dates paralleling it, and usually contemporaneous events. Timelines can use any suitable scale representing time, suiting the subject and data; many use a linear scale, in which a unit of distance is equal to a set amount of time. This timescale is dependent on the events in the timeline. A timeline of evolution can be over millions of years, whereas a timeline for the day of the September 11 attacks can take place over minutes, and that of an explosion over milliseconds. While many timelines use a linear timescale—especially where very large or small timespans are relevant -- logarithmic timelines entail a logarithmic scale of time; some "hurry up and wait" chronologies are depicted with zoom lens metaphors. History Time and space, particularly the line, are intertwined concepts in human thought. The line is ubiquitous in clocks in the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadrosauridae
Hadrosaurids (), or duck-billed dinosaurs, are members of the ornithischian family Hadrosauridae. This group is known as the duck-billed dinosaurs for the flat duck-bill appearance of the bones in their snouts. The ornithopod family, which includes genera such as ''Edmontosaurus'' and ''Parasaurolophus'', was a common group of herbivores during the Late Cretaceous Period. Hadrosaurids are descendants of the Upper Jurassic/Lower Cretaceous iguanodontian dinosaurs and had a similar body layout. Hadrosaurs were among the most dominant herbivores during the Late Cretaceous in Asia and North America, and during the close of the Cretaceous several lineages dispersed into Europe, Africa, South America and Antarctica. Like other ornithischians, hadrosaurids had a predentary bone and a pubic bone which was positioned backwards in the pelvis. Unlike more primitive iguanodonts, the teeth of hadrosaurids are stacked into complex structures known as dental batteries, which acted as effective g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithopoda
Ornithopoda () is a clade of ornithischian dinosaurs, called ornithopods (), that started out as small, bipedal running grazers and grew in size and numbers until they became one of the most successful groups of herbivores in the Cretaceous world, dominating the North American land. Their major evolutionary advantage was the progressive development of a chewing apparatus that became the most sophisticated ever developed by a non-avian dinosaur, rivaling that of modern mammals such as the domestic cow. They reached their apex of diversity and ecological dominance in the hadrosaurids (colloquially known as 'duck-bills'), before they were wiped out by the Cretaceous–Paleogene extinction event along with all other non-avian dinosaurs. Members are known from all seven continents, though they are generally rare in the Southern Hemisphere. History of research In 1870, Thomas Henry Huxley listed Iguanodontidae (coined by Cope a year earlier) as one of his three families of dinosaurs ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Dinosauria
''The Dinosauria'' is an extensive book on dinosaurs, compiled by David B. Weishampel, Peter Dodson, and Halszka Osmólska. It has been published in 2 editions, with the first edition published in 1990, consisting of material from 23 scientists.Benson R. (2007), "Review: Weishampel D.B., Dodson P. & Osmolska H. 2004. ''The Dinosauria''", ''Geological Magazine'' 144(1): pp. 218-219 The second, greatly revised edition, was published in 2004, with material from 43 scientists. Both editions were published by University of California Press. The book covers a wide range of topics about dinosaurs, including their systematics, anatomy, and history History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the History of writing#Inventions of writing, invention of writing systems is considered prehistory. "History" is an umbr .... It has been lauded as "the best scholarly reference work available on dinosaurs" and "an his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
