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Arrhinoceratops
''Arrhinoceratops'' (meaning "no nose-horn face", derived from the Ancient Greek "a-/α-" "no", rhis/ῥίς "nose" "keras/κέρας" "horn", "-ops/ὤψ" "face") is a genus of herbivorous ceratopsian dinosaur. The name was coined as its original describer concluded it was special because the nose-horn was not a separate bone, however further analysis revealed this was based on a misunderstanding. It lived during the latest Campanian/earliest Maastrichtian stage of the Late Cretaceous, predating its famous relative ''Triceratops'' by a few million years, although it was contemporary with ''Anchiceratops''. Its remains have been found in Canada. Discoveries and species Described by William Arthur Parks in 1925, ''Arrhinoceratops'' is known from a partially crushed, slightly distorted skull which lacked the lower jaws. The remains were collected from the Neill's Ranch site, along the Red Deer River in Alberta by a 1923 expedition from the University of Toronto.Parks, W.A. (1925). " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arrhinoceratops BW
''Arrhinoceratops'' (meaning "no nose-horn face", derived from the Ancient Greek "a-/α-" "no", rhis/ῥίς "nose" "keras/κέρας" "horn", "-ops/ὤψ" "face") is a genus of herbivorous ceratopsian dinosaur. The name was coined as its original describer concluded it was special because the nose-horn was not a separate bone, however further analysis revealed this was based on a misunderstanding. It lived during the latest Campanian/earliest Maastrichtian stage of the Late Cretaceous, predating its famous relative ''Triceratops'' by a few million years, although it was contemporary with ''Anchiceratops''. Its remains have been found in Canada. Discoveries and species Described by William Arthur Parks in 1925, ''Arrhinoceratops'' is known from a partially crushed, slightly distorted skull which lacked the lower jaws. The remains were collected from the Neill's Ranch site, along the Red Deer River in Alberta by a 1923 expedition from the University of Toronto.Parks, W.A. (1925). " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horseshoe Canyon Formation
The Horseshoe Canyon Formation is a stratigraphic unit of the Western Canada Sedimentary Basin in southwestern Alberta. It takes its name from Horseshoe Canyon, an area of badlands near Drumheller. The Horseshoe Canyon Formation is part of the Edmonton Group and is up to thick. It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams. A variety of depositional environments are represented in the succession, including floodplains, estuarine channels, and coal swamps, which have yielded a diversity of fossil material. Tidally-influenced estuarine point bar deposits are easily recognizable as Inclined Heterolithic Stratification (IHS). Brackish-water trace fossil assemblages occur within these bar deposits and demonstrate periodic incursion of marine waters into the estuaries. The Horseshoe Canyon Formation crops out extensively in the area around Drumheller, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anchiceratops
''Anchiceratops'' ( ) is an extinct genus of chasmosaurine ceratopsid dinosaur that lived approximately 72 to 71 million years ago during the latter part of the Cretaceous Period in what is now Alberta, Canada. ''Anchiceratops'' was a medium-sized, heavily built, ground-dwelling, quadrupedal herbivore that could grow up to an estimated long. Its skull featured two long brow horns and a short horn on the nose. The skull frill was elongated and rectangular, its edges adorned by coarse triangular projections. About a dozen skulls of the genus have been found. History of discovery The first remains of ''Anchiceratops'' were discovered along the Red Deer River in the Canadian province of Alberta in 1912 by an expedition led by Barnum Brown. The holotype, specimen AMNH 5251, is the back half of a skull, including the long frill, and two other partial skulls, specimens AMNH 5259 (the paratype) and AMNH 5273, were found at the same time, which are now stored in the American Museum of N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1925 In Paleontology
Plants Angiosperms Arthropods Insects Archosauromorpha Newly named dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Newly named plesiosaurs Synapsids Non-mammalian References {{portal, Paleontology 1920s in paleontology Paleontology Paleontology (), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (roughly 11,700 years before present). It includes the study of fossi ... Paleontology 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torosaurus
''Torosaurus'' ("perforated lizard", in reference to the large openings in its frill) is a genus of herbivorous ceratopsid dinosaur that lived during the late Maastrichtian stage of the Cretaceous period, between 68 and 66 million years ago, though it is possible that the species range might extend to as far as 69 million years ago.*Hicks, J.F., Johnson, K.R., Obradovich, J. D., Miggins, D.P., and Tauxe, L. 2003. Magnetostratigraphyof Upper Cretaceous (Maastrichtian) to lower Eocene strata of the Denver Basin, Colorado. In K.R. Johnson, R.G. Raynolds and M.L. Reynolds (eds), Paleontology and Stratigraphy of Laramide Strata in the Denver Basin, Pt. II., Rocky Mountain Geology 38: 1-27. Fossils have been discovered across the Western Interior of North America, from Saskatchewan to southern Texas. ''Torosaurus'' possessed one of the largest skulls of any known land animal, with the frilled skull reaching in length. ''Torosaurus'' is thought to have been the same size as the contemp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triceratops
''Triceratops'' ( ; ) is a genus of herbivore, herbivorous Chasmosaurinae, chasmosaurine Ceratopsidae, ceratopsid dinosaur that first appeared during the late Maastrichtian stage of the Late Cretaceous Period (geology), period, about 68 million years ago in what is now North America. It is one of the last-known non-avian dinosaur genera, and became extinct in the Cretaceous-Paleogene extinction event, Cretaceous–Paleogene extinction event 66 million years ago. The name ''Triceratops'', which literally 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 horn (anatomy), horns on the skull, and a large four-legged body, exhibiting convergent evolution with rhinoceroses and bovines, ''Triceratops'' is one of the most recognizable of all dinosaurs and the most well-known ceratopsid. It was also one of the largest, up to long and in body m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Parks (paleontologist)
William Arthur Parks (11 December 1868 – 3 October 1936) was a Canadian geologist and paleontologist, following in the tradition of Lawrence Lambe. Parks was born in Hamilton, Ontario. After graduating with a Bachelor of Arts in 1892, Parks joined the University of Toronto's staff, where he taught geology, paleontology, and mineralogy. He went on to earn a PhD in 1900. He wrote 80 scientific papers in his lifetime. Parks died in Toronto, Ontario, in 1936. Named taxa * 1919 '' Kritosaurus incurvimanus'' * 1922 ''Parasaurolophus walkeri'' * 1923 '' Corythosaurus intermedius'' * 1923 ''Lambeosaurus lambei'' * 1924 ''Dyoplosaurus acutosquameus'' * 1925 ''Arrhinoceratops brachyops'' * 1925 '' Neomeryx finni'' * 1926 '' Struthiomimus brevitertius'' (type species of ''Dromiceiomimus'') * 1928 ''Struthiomimus samueli'' * 1928 '' Albertosaurus arctunguis'' * 1931 '' Tetragonosaurus praeceps'' * 1931 '' Tetragonosaurus erectofrons'' * 1933 ''Struthiomimus currelli'' * 1933 '' Struthi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Arthur Parks
William Arthur Parks (11 December 1868 – 3 October 1936) was a Canadian geologist and paleontologist, following in the tradition of Lawrence Lambe. Parks was born in Hamilton, Ontario. After graduating with a Bachelor of Arts in 1892, Parks joined the University of Toronto's staff, where he taught geology, paleontology, and mineralogy. He went on to earn a PhD in 1900. He wrote 80 scientific papers in his lifetime. Parks died in Toronto, Ontario, in 1936. Named taxa * 1919 '' Kritosaurus incurvimanus'' * 1922 ''Parasaurolophus walkeri'' * 1923 '' Corythosaurus intermedius'' * 1923 ''Lambeosaurus lambei'' * 1924 ''Dyoplosaurus acutosquameus'' * 1925 ''Arrhinoceratops brachyops'' * 1925 '' Neomeryx finni'' * 1926 '' Struthiomimus brevitertius'' (type species of ''Dromiceiomimus'') * 1928 ''Struthiomimus samueli'' * 1928 '' Albertosaurus arctunguis'' * 1931 '' Tetragonosaurus praeceps'' * 1931 '' Tetragonosaurus erectofrons'' * 1933 ''Struthiomimus currelli'' * 1933 ''Struthio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maastrichtian
The Maastrichtian () is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from . The Maastrichtian was preceded by the Campanian and succeeded by the Danian (part of the Paleogene and Paleocene). The Cretaceous–Paleogene extinction event (formerly known as the Cretaceous–Tertiary extinction event) occurred at the end of this age. In this mass extinction, many commonly recognized groups such as non-avian dinosaurs, plesiosaurs and mosasaurs, as well as many other lesser-known groups, died out. The cause of the extinction is most commonly linked to an asteroid about wide colliding with Earth, ending the Cretaceous. Stratigraphic definitions Definition The Maastrichtian was introduced into scientific literature by Belgian geologist André Hubert Dumont in 1849, after studying rock strata of the Chalk Group c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utah
Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to its west by Nevada. Utah also touches a corner of New Mexico in the southeast. Of the fifty U.S. states, Utah is the 13th-largest by area; with a population over three million, it is the 30th-most-populous and 11th-least-densely populated. Urban development is mostly concentrated in two areas: the Wasatch Front in the north-central part of the state, which is home to roughly two-thirds of the population and includes the capital city, Salt Lake City; and Washington County in the southwest, with more than 180,000 residents. Most of the western half of Utah lies in the Great Basin. Utah has been inhabited for thousands of years by various indigenous groups such as the ancient Puebloans, Navajo and Ute. The Spanish were the first Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas A
Douglas may refer to: People * Douglas (given name) * Douglas (surname) Animals *Douglas (parrot), macaw that starred as the parrot ''Rosalinda'' in Pippi Longstocking *Douglas the camel, a camel in the Confederate Army in the American Civil War Businesses * Douglas Aircraft Company * Douglas (cosmetics), German cosmetics retail chain in Europe * Douglas (motorcycles), British motorcycle manufacturer Peerage and Baronetage * Duke of Douglas * Earl of Douglas, or any holder of the title * Marquess of Douglas, or any holder of the title * Douglas Baronets Peoples * Clan Douglas, a Scottish kindred * Dougla people, West Indians of both African and East Indian heritage Places Australia * Douglas, Queensland, a suburb of Townsville * Douglas, Queensland (Toowoomba Region), a locality * Port Douglas, North Queensland, Australia * Shire of Douglas, in northern Queensland Belize * Douglas, Belize Canada * Douglas, New Brunswick * Douglas Parish, New Brunswick * Douglas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
