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Asiaceratops
''Asiaceratops'' (meaning "Asian horned face") is a genus of herbivorous ceratopsian dinosaur. It lived during the Early-Late Cretaceous. The type species, ''A. salsopaludalis'' is known from Uzbekistan, while ''A. sulcidens'' is known from China and Mongolia. Discovery and naming The type species, ''Asiaceratops salsopaludalis'', was formally described by Lev Nesov, L.F. Kaznyshkina and Gennadiy Olegovich Cherepanov in 1989. The generic name combines a reference to Asia with ''~ceratops'', "horned face". The specific name means "of the salt marsh" in Latin. In the same publication '' Microceratops sulcidens'' Bohlin 1953 was renamed into a second species of ''Asiaceratops'': ''Asiaceratops sulcidens''.L.A. Nessov, L F. Kaznyshkina, and G.O. Cherepanov. (1989). esozoic ceratopsian dinosaurs and crocodiles of central Asia In: Bogdanova and Khozatskii (eds.), ''Theoretical and Applied Aspects of Modern Palaeontology'' pp 144-154 The holotype of ''Asiaceratops salsopaludalis'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Ceratopsian Research
This timeline of ceratopsian research is a chronological listing of events in the History of paleontology, history of paleontology focused on the ceratopsians, a group of herbivorous marginocephalian dinosaurs that evolved parrot-like beaks, bony frills, and, later, spectacular horns. The first scientifically documented ceratopsian fossils were described by Edward Drinker Cope starting in the :1870s in paleontology, 1870s; however, the remains were poorly preserved and their true nature was not recognized. Over the next several decades, Cope named several such genera and species. Cope's hated Bone Wars, rival, Othniel Charles Marsh, also described ceratopsian remains. In 1887 in paleontology, 1887, Marsh mistook a ''Triceratops'' horn for one belonging to a new species of prehistoric ''Bison''. Marsh also named the eponymous genus ''Ceratops'' in 1888 in paleontology, 1888. The next year, he named the most famous ceratopsian, ''Triceratops horridus''. It was the discovery of ''Tri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptoceratopsidae
Leptoceratopsidae is an extinct family of neoceratopsian dinosaurs from Asia, North America and Europe. Leptoceratopsids resembled, and were closely related to, other neoceratopsians, such as the families Protoceratopsidae and Ceratopsidae, but they were more primitive and generally smaller. Phylogeny Leptoceratopsidae was originally named by Franz Nopcsa von Felső-Szilvás in 1923 as a subfamily Leptoceratopsinae, and its type species is '' Leptoceratops gracilis''. Mackovicky, in 2001, defined it as a stem-based taxon and a family consisting of ''Leptoceratops gracilis'' and all species closer to ''Leptoceratops'' than to ''Triceratops horridus''.Makovicky, P.J. 2001. A ''Montanoceratops cerorhynchus'' (Dinosauria: Ceratopsia) braincase from the Horseshoe Canyon Formation of Alberta, In: Tanke, D.H. & Carpenter, K. (Eds.). ''Mesozoic Vertebrate Life''. Bloomington: Indiana University Press. Pp. 243-262. The cladogram below follows the topologies from a 2015 analysis by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1989 In Paleontology
Paleozoology Arthropods Newly named insects Conodont paleozoology German paleontologist and stratigrapher Heinz Walter Kozur (1942-2013) described the conodont genus ''Mesogondolella''. Vertebrate paleozoology Plesiosaurs * Plesiosaur gastroliths documented.Chatterjee and Small (1989). Sanders, Manley, and Carpenter (2001), "Table 12.1" page 167. = New taxa = Archosauromorphs = Newly named pseudosuchians = = Newly named dinosaurs = Data courtesy of George Olshevsky's dinosaur genera list. = Newly named birds = Pterosaurs = New taxa = Synapsids = Non-mammalian = References {{portal, Paleontology * Chatterjee, Sankar and Small, Bryan J.; 1989; New plesiosaurs from the Upper Cretaceous of Antarctica; 47 pp. 197–215 in Origins and Evolution of the Antarctic Biota, Geological Society Special Pub., edited by Crame, J.A. * Sanders F, Manley K, Carpenter K. Gastroliths from the Lower Cretaceous sauropod Cedarosaurus weiskopfae. In: Tank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khodzhakul Formation
The Khodzhakul Formation is a Cenomanian aged geologic formation in Uzbekistan. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, et al., 2004, "Dinosaur distribution." pp.517-607 As well as those of Mammals. It is part of the same stratigraphic succession as the overlying Bissekty Formation. Fossil content One of the largest mammals of the Mesozoic, ''Oxlestes'', occurred in this formation, and may have predated on dinosaur species.Michael J. Benton,Mikhail A. Shishkin, David M. Unwin, The Age of Dinosaurs in Russia and Mongolia, Cambridge University Press, 04/12/2003 - 740 páginas 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 f ... References Bibliography * {{ISBN, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microceratus
''Microceratus'' (meaning "small-horned") is a genus of small ceratopsian dinosaur that lived in the Cretaceous period in Asia. It walked on two legs, had short front arms, a characteristic ceratopsian frill and beak-like mouth, and was around long. It was one of the first ceratopsians, or horned dinosaurs, along with '' Psittacosaurus'' in Mongolia. Discovery The type species, ''Microceratops gobiensis'', was first described by Bohlin in 1953, and so was the second species, ''M. sulcidens'', which may belong to '' Asiaceratops'' instead. However, the generic name was already preoccupied by an ichneumon wasp (subfamily Cryptinae) with the same name. Though much of the material has since been reassigned to the genus '' Graciliceratops'', a replacement name ''Microceratus'' was created by Mateus in 2008 for the type specimen. Classification ''Microceratus'' belonged to the Ceratopsia (Ancient Greek for "horned face"), a group of herbivorous dinosaurs with parrot-like beaks w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratopsian
Ceratopsia or Ceratopia ( or ; Greek: "horned faces") is a group of herbivorous, beaked dinosaurs that thrived in what are now North America, Europe, and Asia, during the Cretaceous Period, although ancestral forms lived earlier, in the Jurassic. The earliest known ceratopsian, '' Yinlong downsi'', lived between 161.2 and 155.7 million years ago.Holtz, Thomas R. Jr. (2011) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages,'Winter 2010 Appendix./ref> The last ceratopsian species, '' Triceratops prorsus'', became extinct during the Cretaceous–Paleogene extinction event, . ''Triceratops'' is by far the best-known ceratopsian to the general public. It is traditional for ceratopsian genus names to end in "''-ceratops''", although this is not always the case. One of the first named genera was ''Ceratops'' itself, which lent its name to the group, although it is considered a ''nomen dubium'' today as its fossil remains have no distinguishing char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Greek
Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic period (), and the Classical period (). Ancient Greek was the language of Homer and of fifth-century Athenian historians, playwrights, and philosophers. It has contributed many words to English vocabulary and has been a standard subject of study in educational institutions of the Western world since the Renaissance. This article primarily contains information about the Epic and Classical periods of the language. From the Hellenistic period (), Ancient Greek was followed by Koine Greek, which is regarded as a separate historical stage, although its earliest form closely resembles Attic Greek and its latest form approaches Medieval Greek. There were several regional dialects of Ancient Greek, of which Attic Greek developed into Koi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xinminpu Group
The Xīnmínbǎo Group () is a group of geological formations in north central China. They occur across a large depression between the Altai mountains of Mongolia to the north and the Qilian mountains of the Qinghai Plateau to the south, in the Gōngpóquán (公婆泉) and Suànjǐngzi (算井子) basins, and also in the neighbouring Jiuquan Basin. Both of these areas are inland basins consisting of fluvial (river), lacustrine (lake), and intermontane (between mountains) alluvial fan (floodplain) sediments that were deposited during the Early Cretaceous, probably during the Aptian or possibly late Barremian stage, when the climate was semi-arid and subtropical. The group has been visited by many expeditions including the Silk Road dinosaur expedition of 1992 which concentrated on the area around Mazong Shan. Geology The group is made up of three main formations. Chijinbao Formation This consists of a lower red unit of coarse conglomerates grading to fine sandston ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asia
Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area of , about 30% of Earth's total land area and 8.7% of Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Its 4.7 billion people constitute roughly 60% of the world's population. In general terms, Asia is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean, and on the north by the Arctic Ocean. The border of Asia with Europe is a historical and cultural construct, as there is no clear physical and geographical separation between them. It is somewhat arbitrary and has moved since its first conception in classical antiquity. The division of Eurasia into two continents reflects East–West cultural, ling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parrot
Parrots, also known as psittacines (), are birds of the roughly 398 species in 92 genera comprising the order Psittaciformes (), found mostly in tropical and subtropical regions. The order is subdivided into three superfamilies: the Psittacoidea ("true" parrots), the Cacatuoidea (cockatoos), and the Strigopoidea (New Zealand parrots). One-third of all parrot species are threatened by extinction, with higher aggregate extinction risk ( IUCN Red List Index) than any other comparable bird group. Parrots have a generally pantropical distribution with several species inhabiting temperate regions in the Southern Hemisphere, as well. The greatest diversity of parrots is in South America and Australasia. Characteristic features of parrots include a strong, curved bill, an upright stance, strong legs, and clawed zygodactyl feet. Many parrots are vividly coloured, and some are multi-coloured. Most parrots exhibit little or no sexual dimorphism in the visual spectrum. They form t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
