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Agathaumas
''Agathaumas'' (; "great wonder") is a dubious genus of a large ceratopsid dinosaur that lived in Wyoming during the Late Cretaceous (late Maastrichtian stage, 66 million years ago). The name comes from - 'much' and - 'wonder'. It was seen as the largest land animal known at the time of its discovery. It was the first ceratopsian known to science from more than teeth, though relatively little is known about it. The original specimen consisted only of the animal's hip bones, hip vertebrae and ribs, and because these bones vary little between ceratopsid species, it is usually considered a ''nomen dubium''. It is provisionally considered a synonym of ''Triceratops'' or ''Torosaurus'', but is difficult to compare to both genera because it is only known from postcranial remains. History The holotype remains of ''Agathaumas'' were first found in 1872 in southwestern Wyoming. They were discovered by Fielding Bradford Meek and Henry Martyn Bannister while they were looking for foss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triceratops
''Triceratops'' ( ; ) is a genus of Chasmosaurinae, chasmosaurine Ceratopsia, ceratopsian dinosaur that lived during the late Maastrichtian age of the Late Cretaceous Period (geology), period, about 68 to 66 million years ago on the island continent of Laramidia, now forming western North America. It was one of the last-known non-avian dinosaurs and lived until the Cretaceous-Paleogene extinction event, Cretaceous–Paleogene extinction event 66 million years ago. The name ''Triceratops'', which means 'three-horned face', is derived from the Ancient Greek, Greek words () meaning 'three', () meaning 'horn', and () meaning 'face'. Bearing a large bony neck frill, frill, three horns on the skull, and a large, four-legged body, exhibiting convergent evolution with bovines and rhinoceroses, ''Triceratops'' is one of the most recognizable of all dinosaurs and the best-known ceratopsian. It was also one of the largest, measuring around long and weighing up to . It shared the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratopsia
Ceratopsia or Ceratopia ( or ; Ancient Greek, Greek: "horned faces") is a group of herbivore, herbivorous, beaked dinosaurs that thrived in what are now North America, Asia and Europe, during the Cretaceous Period (geology), Period, although ancestral forms lived earlier, in the Late Jurassic of Asia. 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'' tod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lance Formation
The Lance (Creek) Formation is a division of Late Cretaceous (dating to about 69–66 Ma) rocks in the western United States. Named after Lance Creek, Wyoming, the microvertebrate fossils and dinosaurs represent important components of the latest Mesozoic vertebrate faunas. The Lance Formation is Late Maastrichtian in age (Lancian NALMA, land mammal age), and shares much fauna with the Hell Creek Formation of Montana and North Dakota, the Frenchman Formation of southwest Saskatchewan, and the lower part of the Scollard Formation of Alberta. The Lance Formation occurs above the ''Baculites clinolobatus'' ammonite marine zone in Wyoming, the top of which has been dated to about 69 million years ago, and extends to the K-Pg boundary, 66 million years ago. However, the characteristic land vertebrate fauna of the Lancian age (which take its name from this formation) is only found in the upper strata of the Lance, roughly corresponding to the thinner equivalent formations such as the H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cionodon
''Cionodon'' (meaning 'column tooth') is a dubious genus of hadrosauridae, hadrosauridJ. R. Horner, D. B. Weishampel, and C. A. Forster. 2004. Hadrosauridae. In D. B. Weishampel, H. Osmolska, and P. Dodson (eds.), ''The Dinosauria'' (2nd edition). ''University of California Press, Berkeley'' 438-463 dinosaur from the Late Cretaceous. The type species, ''C. arctatus'', was found in the Denver Formation of Lodge Pole Creek, Colorado and was formally described by Edward Drinker Cope in 1874 based on the holotype American Museum of Natural History, AMNH 3951, collected in 1873. It is a ''nomen dubium'' because it is based on very fragmentary remains. Two other species have since been described: ''Cionodon kysylkumensis'' (Anatoly Riabinin, Riabinin, 1931), based on the holotype CCMGE 1/3760 (a set of vertebrae) from Uzbekistan,A. N. Riabinin. 1931. Ostatki dinozavrov iz verkhnego mela nizov'ev r. Amu-Dar'i [On the dinosaurian remains from the Upper Cretaceous of the lower parts of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the Latin word for the white limestone known as chalk. The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period. Climate During the Late Cretaceous, the climate was warmer than present, although throughout the period a cooling trend is evident. The tropics became restricted to equatorial regions and northern latitudes experienced markedly more seasonal climatic conditions. Geography Due to plate tectonics, the Americas were gradually moving westward, causing the Atlantic Ocean to expand. The Western Interior Seaway divided North America into eastern and western halves; Appalachia and Laramidia. India maintained a northward course towards Asia. In the Southern Hemisphere, Aus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morrison Formation
The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone, and limestone and is light gray, greenish gray, or red. Most of the fossils occur in the green siltstone beds and lower sandstones, relics of the rivers and floodplains of the Jurassic period. It is centered in Wyoming and Colorado, with outcrops in Montana, North Dakota, South Dakota, Nebraska, Kansas, the panhandles of Oklahoma and Texas, New Mexico, Arizona, Utah, and Idaho. Equivalent rocks under different names are found in Canada. It covers an area of 1.5 million square kilometers (600,000 square miles), although only a tiny fraction is exposed and accessible to geologists and paleontologists. Over 75% is still buried under the prairie to the east, and much of its western paleogeographic extent was eroded during exhuma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cetiosaurus
''Cetiosaurus'' ( meaning 'whale lizard', from the Greek '/ meaning 'sea monster' (later, 'whale') and '/ meaning 'lizard'), is a genus of herbivorous sauropod dinosaur from the Middle Jurassic Period, living about 171 to 165 million years ago during the Bajocian and Bathonian ages in what is now Britain and probably France. ''Cetiosaurus'' was in 1842 the first sauropod from which bones were described and is the most complete sauropod found in England. It was so named because its describer, Sir Richard Owen, supposed it was a marine creature, initially an extremely large crocodile, and did not recognise it for a land-dwelling dinosaur. Because of the early description many species would be named in the genus, eventually eighteen of them. Most of these have now been placed in other genera or are understood to be dubious names, based on poor fossil material. The last is true also of the original type species, ''Cetiosaurus medius'', and so ''C. oxoniensis'' was officially made ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelorosaurus
''Pelorosaurus'' ( ; meaning "monstrous lizard") is a genus of Titanosauriformes, titanosauriform sauropod dinosaur. Remains referred to ''Pelorosaurus'' date from the Early Cretaceous period, about 140–125 million years ago, and have been found in England and Portugal. Thomas R. Holtz Jr., Thomas Holtz estimated its length at 24 meters (79 feet). The name ''Pelorosaurus'' was one of the first to be given to any sauropod. Many species have been assigned to the genus historically, but most are currently considered to belong to other genera. Problematically, the first named species of ''Pelorosaurus'', ''P. conybeari'', is a junior synonym of ''Cetiosaurus brevis''. History ''Pelorosaurus'' was one of the first sauropod, sauropods to be identified as a dinosaur, although it was not the first to be discovered. Richard Owen had discovered ''Cetiosaurus'' in 1841 but had incorrectly identified it as a gigantic sea-going crocodile-like reptile. Mantell identified ''Pelorosaurus'' as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utah Geological Survey
The Utah Geological Survey is based in Salt Lake City, Utah, United States. It also has an office in Cedar City, Utah. It is a division of the Utah Department of Natural Resources and is an applied scientific agency, which creates, interprets, and provides information about Utah's geological environment, resources and hazards, in order to promote safe, beneficial, and wise land usage. Its departments and programs are: Editorial Services, Geologic Hazards Program, Energy & Minerals Program, Geologic Information and Outreach Program, Geologic Mapping Program, Ground Water and Paleontology Program, and the State Energy Program. The UGS has worked on countless projects in the state, including statewide geologic hazards maps, oil shale assessment, Great Salt Lake studies, fault trenching, and the Snake Valley/West Desert Groundwater Monitoring Well Project. In addition, recent research and general geologic information is given in teacher-friendly formats for anyone to use. His ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cope Sketch Agathaumas
A cope ( ("rain coat") or ("cape")) is a liturgical long mantle or cloak, open at the front and fastened at the breast with a band or clasp. It may be of any liturgical colour. A cope may be worn by any rank of the Catholic or Anglican clergy, and by licensed lay ministers on certain occasions. If worn by a bishop, it is generally accompanied by a mitre. The clasp, which is often highly ornamented, is called a ''morse''. In art, angels are often shown wearing copes, especially in Early Netherlandish painting. History There has been little change in the character of the cope since it was first worn by the clergy. It was made of a semicircular piece of silk or other material, its shape distinguishing it from the chasuble, which had straight edges sewn together in front. Both garments are similar in form and origin to the Orthodox phelonion. Modern copes no longer have a hood. Some early examples feature a triangular hood, which was intended to protect the head during proces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proceedings Of The American Philosophical Society
In academia and librarianship, conference proceedings are a collection of academic papers published in the context of an academic conference or workshop. Conference proceedings typically contain the contributions made by researchers at the conference. They are the written record of the work that is presented to fellow researchers. In many fields, they are published as supplements to academic journals; in some, they are considered the main dissemination route; in others they may be considered grey literature. They are usually distributed in printed or electronic volumes, either before the conference opens or after it has closed. A less common, broader meaning of proceedings are the acts and happenings of an academic field, a learned society. For example, the title of the '' Acta Crystallographica'' journals is Neo-Latin for "Proceedings in Crystallography"; the '' Proceedings of the National Academy of Sciences of the United States of America'' is the main journal of that academy. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadrosaurus
''Hadrosaurus'' (; ) is a genus of hadrosaurid ornithopod dinosaurs that lived in North America during the Late Cretaceous Period in what is now the Woodbury Formation in New Jersey about 83.6 to 77.9 Ma. The holotype specimen was found in fluvial marine sedimentation, meaning that the corpse of the animal was transported by a river and washed out to sea. Some fossils are found in the Tar Heel/Coachman Formation. They were large animals ranging from and . Most of the preserved elements are very robust, unusual traits in hadrosaurs. ''Hadrosaurus'' were ponderously built animals equipped with keratinous beaks for cropping foliage and a specialized and complex dentition for food processing. ''Hadrosaurus foulkii'', the only species in this genus, is known from a single specimen consisting of much of the skeleton and parts of the skull. The specimen was collected in 1858 from the Woodbury Formation in New Jersey, US, representing the first dinosaur species known from more than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
