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Gryphoceratops Morrisoni
''Gryphoceratops'' is an extinct genus of leptoceratopsid ceratopsian dinosaur known from the Late Cretaceous of Alberta, southern Canada. Discovery ''Gryphoceratops'' is known only from the holotype ROM 56635, a partial right dentary. The holotype was collected in the northwest corner of Dinosaur Provincial Park, from bonebed 55 of the Milk River Formation, dating to the late Santonian stage of the middle Late Cretaceous period, about 83.5 million years ago. Thus, ''Gryphoceratops'' represents the oldest known leptoceratopsid. However, a cladistic analysis found it to be one of the most advanced leptoceratopsids. Additionally, the holotype probably represents the smallest adult ceratopsian known from North America. The cladogram below represents the cladistic relationship of ''Gryphoceratops'' compared to other leptoceratopsids. Etymology ''Gryphoceratops'' was first named by Michael J. Ryan, David C. Evans, Philip J. Currie, Caleb M. Brown and Don Brinkman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger 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, Australia and Ant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Million Years Ago
The abbreviation Myr, "million years", is a unit of a quantity of (i.e. ) years, or 31.556926 teraseconds. Usage Myr (million years) is in common use in fields such as Earth science and cosmology. Myr is also used with Mya (million years ago). Together they make a reference system, one to a quantity, the other to a particular place in a year numbering system that is ''time before the present''. Myr is deprecated in geology, but in astronomy ''Myr'' is standard. Where "myr" ''is'' seen in geology it is usually "Myr" (a unit of mega-years). In astronomy it is usually "Myr" (Million years). Debate In geology a debate remains open concerning the use of ''Myr'' (duration) plus ''Ma'' (million years ago) versus using only the term ''Ma''. In either case the term '' Ma'' is used in geology literature conforming to ISO 31-1 (now ISO 80000-3) and NIST 811 recommended practices. Traditional style geology literature is written The "ago" is implied, so that any such year number "X Ma" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Udanoceratops Restoration
''Udanoceratops'' (meaning "Udan's horned face") is a genus of large leptoceratopsid dinosaur that lived during the Late Cretaceous period of Mongolia, in what is now the Djadokhta Formation. Discovery ''Udanoceratops'' was first named and described by Russian paleontologist Sergei Kurzanov in 1992 and the type species is ''Udanoceratops tschizhovi''. The holotype (PIN 3907/11) was collected during the 1980s at the Udan Sayr (also spelled Udyn Sayr or Üüden Sair) locality of the Djadokhta Formation in Ömnögovi Province, dating to the Campanian stage of the Late Cretaceous period. The generic name is derived from the name of the locality in which the holotype was found (Udan Sayr) and Greek ''ceras/κέρας'' meaning "horn" and ''-ops/ωψ'' meaning "face". ''Udanoceratops'' is best known from the holotype specimen, which represents a large individual comprising a large, relatively well-preserved and almost complete skull, and sparse body remains including vertebrae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Udanoceratops
''Udanoceratops'' (meaning "Udan's horned face") is a genus of large leptoceratopsid dinosaur that lived during the Late Cretaceous period of Mongolia, in what is now the Djadokhta Formation. Discovery ''Udanoceratops'' was first named and described by Russian paleontologist Sergei Kurzanov in 1992 and the type species is ''Udanoceratops tschizhovi''. The holotype (PIN 3907/11) was collected during the 1980s at the Udan Sayr (also spelled Udyn Sayr or Üüden Sair) locality of the Djadokhta Formation in Ömnögovi Province, dating to the Campanian stage of the Late Cretaceous period. The generic name is derived from the name of the locality in which the holotype was found (Udan Sayr) and Greek ''ceras/κέρας'' meaning "horn" and ''-ops/ωψ'' meaning "face". ''Udanoceratops'' is best known from the holotype specimen, which represents a large individual comprising a large, relatively well-preserved and almost complete skull, and sparse body remains including vertebrae. In 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptoceratops BW
''Leptoceratops'' (meaning 'Thin-horned face' and derived from Greek ''lepto-/λεπτο-'' meaning 'small', 'insignificant', 'slender', 'meagre' or 'lean', ''kerat-/κερατ-'' meaning 'horn' and ''-ops/ωψ'' meaning face), is a genus of leptoceratopsid ceratopsian dinosaurs from the late Cretaceous Period (late Maastrichtian age, 68.8-66 Ma ago) of what is now Western North America. Their skulls have been found in Alberta, Canada and Wyoming. Description ''Leptoceratops'' could probably stand and run on their hind legs: analysis of forelimb function indicates that even though they could not pronate their hands, they could walk on four legs. Paul proposed that ''Leptoceratops'' was around long and could have weighed , but Tereschenko proposed a maximum length of . Discovery and species The first small ceratopsian named ''Leptoceratops'' was discovered in 1910 by Barnum Brown in the Red Deer Valley in Alberta, Canada. He described it four years later. The first specimen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptoceratops
''Leptoceratops'' (meaning 'Thin-horned face' and derived from Greek ''lepto-/λεπτο-'' meaning 'small', 'insignificant', 'slender', 'meagre' or 'lean', ''kerat-/κερατ-'' meaning 'horn' and ''-ops/ωψ'' meaning face), is a genus of leptoceratopsid ceratopsian dinosaurs from the late Cretaceous Period (late Maastrichtian age, 68.8-66 Ma ago) of what is now Western North America. Their skulls have been found in Alberta, Canada and Wyoming. Description ''Leptoceratops'' could probably stand and run on their hind legs: analysis of forelimb function indicates that even though they could not pronate their hands, they could walk on four legs. Paul proposed that ''Leptoceratops'' was around long and could have weighed , but Tereschenko proposed a maximum length of . Discovery and species The first small ceratopsian named ''Leptoceratops'' was discovered in 1910 by Barnum Brown in the Red Deer Valley in Alberta, Canada. He described it four years later. The first specimen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prenoceratops BW
''Prenoceratops'', (meaning 'bent or prone-horned face' and derived from Greek ''prene-/πρηνη-'' meaning 'bent forwards' or 'prone', ''cerat-/κερατ-'' meaning 'horn' and ''-ops/ωψ'' meaning 'face') is a genus of ceratopsian dinosaur from the Late Cretaceous Period. It was a relatively small dinosaur, reaching in length and in body mass. Its fossils have been found in the upper Two Medicine Formation in the present-day U.S. state of Montana, in Campanian age rock layers that have been dated to 74.3 million years ago.Ryan, M. J., Evans, D. C., Currie, P. J., Brown, C. M., & Brinkman, D. (2012). New leptoceratopsids from the Upper Cretaceous of Alberta, Canada. ''Cretaceous Research'', 35: 69-80. Fossils were also found in the Oldman Formation in the modern day Canadian province of Alberta, dating to around 77 million years ago. Discovery and species ''Prenoceratops'' was first discovered on a Blackfeet reservation in Pondera County, Montana in layers coming from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prenoceratops
''Prenoceratops'', (meaning 'bent or prone-horned face' and derived from Greek ''prene-/πρηνη-'' meaning 'bent forwards' or 'prone', ''cerat-/κερατ-'' meaning 'horn' and ''-ops/ωψ'' meaning 'face') is a genus of ceratopsian dinosaur from the Late Cretaceous Period. It was a relatively small dinosaur, reaching in length and in body mass. Its fossils have been found in the upper Two Medicine Formation in the present-day U.S. state of Montana, in Campanian age rock layers that have been dated to 74.3 million years ago.Ryan, M. J., Evans, D. C., Currie, P. J., Brown, C. M., & Brinkman, D. (2012). New leptoceratopsids from the Upper Cretaceous of Alberta, Canada. ''Cretaceous Research'', 35: 69-80. Fossils were also found in the Oldman Formation in the modern day Canadian province of Alberta, dating to around 77 million years ago. Discovery and species ''Prenoceratops'' was first discovered on a Blackfeet reservation in Pondera County, Montana in layers coming from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ischioceratops Flipped
''Ischioceratops'' () is an extinct genus of small herbivorous ceratopsian dinosaur that lived approximately 69 million years ago during the latter part of the Cretaceous Period in what is now China. ''Ischioceratops'' was a small sized, moderately-built, ground-dwelling, quadrupedal herbivore, whose total body length has been estimated to be about . The ceratopsians were a group of dinosaurs with parrot-like beaks which fed on vegetation and thrived in North America and Asia during the Cretaceous Period, which ended approximately 66 million years ago, at which point they all became extinct. Its name means "ischium horned face", referring to the peculiar shape of the ischiatic bones. ''Ischioceratops'' existed in the Wangshi Group during the late Cretaceous. It lived alongside centrosaurines, saurolophines, and tyrannosaurines. The most common creatures in the formation were '' Sinoceratops'' and '' Zhuchengtyrannus''. Discovery and naming In 2015, the type species ''Isc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ischioceratops
''Ischioceratops'' () is an extinct genus of small herbivorous ceratopsian dinosaur that lived approximately 69 million years ago during the latter part of the Cretaceous Period in what is now China. ''Ischioceratops'' was a small sized, moderately-built, ground-dwelling, quadrupedal herbivore, whose total body length has been estimated to be about . The ceratopsians were a group of dinosaurs with parrot-like beaks which fed on vegetation and thrived in North America and Asia during the Cretaceous Period, which ended approximately 66 million years ago, at which point they all became extinct. Its name means "ischium horned face", referring to the peculiar shape of the ischiatic bones. ''Ischioceratops'' existed in the Wangshi Group during the late Cretaceous. It lived alongside centrosaurines, saurolophines, and tyrannosaurines. The most common creatures in the formation were ''Sinoceratops'' and ''Zhuchengtyrannus''. Discovery and naming In 2015, the type species ''Ischiocer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montanoceratops BW Flipped
''Montanoceratops'' is an extinct genus of small ceratopsian dinosaur that lived approximately 70 million years ago during the latter part of the Cretaceous Period in what is now Montana and Alberta. ''Montanoceratops'' was a small sized, moderately-built, ground-dwelling, quadrupedal herbivore, that could grow up to an estimated in length and in body mass. Description ''Montanoceratops'' was a typical primitive ceratopsian in many respects, distinguished from the later species by the presence of claws, rather than hooves, and by having teeth in its upper jaw, rather than a toothless beak. It was once thought to have a horn on its nose but that was a misplaced cheek horn.Holtz, Thomas R. Jr. (2008) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages'Supplementary Information/ref> According to Brown and Schlaikjer (1935), ''Montanoceratops'' can be distinguished based on the following characteristics: * the nasal bone is proportionally la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montanoceratops
''Montanoceratops'' is an extinct genus of small ceratopsian dinosaur that lived approximately 70 million years ago during the latter part of the Cretaceous Period in what is now Montana and Alberta. ''Montanoceratops'' was a small sized, moderately-built, ground-dwelling, quadrupedal herbivore, that could grow up to an estimated in length and in body mass. Description ''Montanoceratops'' was a typical primitive ceratopsian in many respects, distinguished from the later species by the presence of claws, rather than hooves, and by having teeth in its upper jaw, rather than a toothless beak. It was once thought to have a horn on its nose but that was a misplaced cheek horn.Holtz, Thomas R. Jr. (2008) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages'Supplementary Information/ref> According to Brown and Schlaikjer (1935), ''Montanoceratops'' can be distinguished based on the following characteristics: * the nasal bone is proportionally lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
