|
Dakota Hogback Natural Area
Dinosaur Ridge is a segment of the Dakota Hogback in the Morrison Fossil Area National Natural Landmark located in Jefferson County, Colorado, near the town of Morrison and just west of Denver. The Dinosaur Ridge area is one of the world's most famous dinosaur fossil localities. In 1877, fossil excavation began at Dinosaur Ridge under the direction of paleontologist Othniel Charles Marsh. Some of the best-known dinosaurs were found here, including ''Stegosaurus'', ''Apatosaurus'', ''Diplodocus'', and ''Allosaurus''. In 1973, the area was recognized for its uniqueness as well as its historical and scientific significance when it was designated the Morrison Fossil Area National Natural Landmark by the National Park Service. In 1989, the Friends of Dinosaur Ridge formed to address increasing concerns regarding the preservation of the site and to offer educational programs on the area's resources. The rocks on the west side of Dinosaur Ridge are part of the widespread Morrison Form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dakota Hogback
: North terminus: : South terminus: The Dakota Hogback is a long hogback ridge at the eastern fringe of the Rocky Mountains that extends north-south from southern Wyoming through Colorado and into northern New Mexico in the United States. The ridge is prominently visible as the first line of foothills along the edge of the Great Plains. It is generally faulted along its western side, and varies in height, with gaps in numerous locations where rivers exit the mountains. The ridge takes its name from the Dakota Formation, a formation with resistant sandstone beds that cap the ridge. The hogback was formed during the Laramide orogeny, approximately 50 million years (50 my) ago, when the modern Rockies were created. The general uplift to the west created long faulting in the North American Plate, resulting in the creation of the hogback.Dakota Group in Northern Front Range Foothills, Colorado; Karl M. Waage; A Shorter Contribution to General Geology, Geological Survey Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Rocks Park
Red Rocks Park is a mountain park in Jefferson County, Colorado, owned and maintained by the city of Denver as part of the Denver Mountain Parks system. The park is known for its very large red sandstone outcrops. Many of these rock formations within the park have names, from the mushroom-shaped Seat of Pluto to the inclined Cave of the Seven Ladders. The most visited rocks, around Red Rocks Amphitheatre, are Creation Rock to the north, Ship Rock to the south, and Stage Rock to the east. The red sandstone found throughout Red Rocks Park is geologically identified as belonging to the Fountain Formation. Other Colorado examples of Fountain Formation geology include nearby Roxborough State Park, Garden of the Gods near Colorado Springs, and the Flatirons near Boulder. The rocks were formed about 290-296 million years ago when the Ancestral Rocky Mountains were eroded during the Pennsylvanian epoch. Later, uplift during the Laramide orogeny tilted the rocks to the angle at which the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dakota Sandstone
The Dakota is a sedimentary rock, sedimentary geologic unit name of Formation (stratigraphy), formation and Group (stratigraphy), group rank in Midwestern North America. The Dakota units are generally composed of sandstones, mudstones, clays, and shales deposited in the Mid-Cretaceous opening of the Western Interior Seaway.Monroe, James S. and Wicander, Reed (1997) ''The Changing Earth: Exploring Geology and Evolution'' (2nd edition) Wadsworth Publishing Company, Belmont, California, page 610, The usage of the name Dakota for this particular Albian-Cenomanian strata is exceptionally widespread; from British Columbia and Alberta to Montana and Wisconsin to Colorado and Kansas to Utah and Arizona. It is famous for producing massive colorful rock formations in the Rocky Mountains and the Great Plains of the United States, and for preserving both Fossil track, dinosaur footprints and early deciduous tree leaves. Owing to extensive weathering of older rocks during the Jurassic and Tri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithopods
Ornithopoda () is a clade of ornithischian dinosaurs, called ornithopods (), that started out as small, bipedal cursorial, 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 Hadrosauridae, hadrosaurids (colloquially known as 'duck-bills'), before they were wiped out by the Cretaceous–Paleogene extinction event along with all other non-aves, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dino Tracks 2017-09-30 1631
Dino may refer to: Prefix * dino-, a common prefix in taxonomy, meaning "terrible", "formidable" **Dinosaur People * Dino (given name), a masculine given name and a nickname * Dino (surname), a surname found in Albania and Turkey * Diño, a surname found in the Philippines * Dino (American singer), an American singer/songwriter Arts and entertainment * Dino (The Flintstones), cartoon pet dinosaur of animated TV series ''The Flintstones'', voiced by Mel Blanc * ''Dino'' (film), a 1957 film * '' Dino: Italian Love Songs'', a 1962 album by Dean Martin * ''Dino'' (album), a 1972 studio album by Dean Martin * ''Dino'' (Jessica Folcker album), a studio album by Swedish singer Jessica Folcker * '' Dino: The Essential Dean Martin'', a 2004 compilation album * ''Dino'' (biography), a 1992 biography of Dean Martin by Nick Tosches Businesses and organisations * Dino Entertainment, a firm specializing in the compilation market of the late 1980s and early 1990s * Dino (Polish supermarket ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tidal Flat
Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal flat ecosystems are as extensive globally as mangroves, covering at least of the Earth's surface. / They are found in sheltered areas such as bays, bayous, lagoons, and estuaries; they are also seen in freshwater lakes and salty lakes (or inland seas) alike, wherein many rivers and creeks end. Mudflats may be viewed geologically as exposed layers of bay mud, resulting from deposition of estuarine silts, clays and aquatic animal detritus. Most of the sediment within a mudflat is within the intertidal zone, and thus the flat is submerged and exposed approximately twice daily. A recent global remote sensing analysis estimated that approximately 50% of the global extent of tidal flats occurs within eight countries (Indonesia, China, Au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microorganisms
A microorganism, or microbe,, ''mikros'', "small") and ''organism'' from the el, ὀργανισμός, ''organismós'', "organism"). It is usually written as a single word but is sometimes hyphenated (''micro-organism''), especially in older texts. The informal synonym ''microbe'' () comes from μικρός, mikrós, "small" and βίος, bíos, "life". is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from sixth century BC India. The scientific study of microorganisms began with their observation under the microscope in the 1670s by Anton van Leeuwenhoek. In the 1850s, Louis Pasteur found that microorganisms caused food spoilage, debunking the theory of spontaneous generation. In the 1880s, Robert Koch discovered that microorganisms caused the diseases tuberculosis, cholera, diphtheria, and anthrax. Because micr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Interior Seaway
The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, and the Western Interior Sea) was a large inland sea that split the continent of North America into two landmasses. The ancient sea, which existed from the early Late Cretaceous (100 million years ago) to the earliest Paleocene (66 Ma), connected the Gulf of Mexico, through the United States and Canada, to the Arctic Ocean. The two land masses it created were Laramidia to the west and Appalachia to the east. At its largest extent, it was deep, wide and over long. Origin and geology By Late-Cretaceous times, Eurasia and the Americas had separated along the south Atlantic, and subduction on the west coast of the Americas had commenced, resulting in the Laramide orogeny, the early phase of growth of the modern Rocky Mountains. The Western Interior Seaway may be seen as a downwarping of the continental crust ahead of the growing Laramide/Rockies mountain chain. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rooney Ranch
Rooney Ranch is an historic ranch near Morrison, unincorporated Jefferson County, Colorado. Alexander Rooney came west in 1859 seeking an opportunity.Rooney Ranch; author unknown; National Register of Historic Places Inventory – Nomination Form; United States Department of the Interior, National Park Service; Washington, D.C.; February 13, 1975 He did a variety of work to earn his keep from stone masonry (Central City, the Masonic Lodge), cartage of lumber and other supplies to the mining camps around Denver and South Park, to a dairy farm. He found the high altitude uncomfortable, so he sought out winter pasture at lower elevations for his cattle. In the fall of 1861 he found what he was looking for along the eastern edge of the hogback, between the mountains and the plains. He brought his wife, Emeline, and his family west from Anamosa, Iowa. Over the years, he acquired of land. The family used homesteading to acquire for each qualified member of the family. They also pur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinosaur Ridge 2017-09-30 1762
Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya; their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record shows that birds are feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event approximately 66 mya. Dinosaurs can therefore be divided into avian dinosaurs—birds—and the extinct non-avian dinosaurs, which are all dinosaurs other than birds. Dinosaurs are varied from taxonomic, morphological and ecological standpoints. Birds, at over 10,700 living species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parfet Prehistoric Preserve
The Parfet Prehistoric Preserve is a dinosaur track site in Golden, Colorado. The site is accessible to the public via the Triceratops Trail, a 1.5-mile walking trail maintained by the Friends of Dinosaur Ridge. Tracks include those of ''Triceratops'', a possible ''Tyrannosaurus rex'', and a possible ''Edmontosaurusa''. Non-dinosaur tracks include those of birds, small mammals, and beetles. Palm frond impressions are also preserved. The tracks occur in the Upper Cretaceous Laramie Formation, deposited in a semi-tropical swamp about 68 million years ago. The tracks were exposed by a now-discontinued clay mining at the Parfet Clay Pits. The tracks were exposed when the clay layers were removed by the mining, revealing track impressions preserved in the overlying sandstone layers, which are now tilted into a vertical position. The site was designated a National Natural Landmark in June 2011 by expansion of the Morrison Fossil Area, also known as Dinosaur Ridge Dinosaur Ridge i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinosaur Ridge Roadcut I-70
Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya; their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record shows that birds are feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event approximately 66 mya. Dinosaurs can therefore be divided into avian dinosaurs—birds—and the extinct non-avian dinosaurs, which are all dinosaurs other than birds. Dinosaurs are varied from taxonomic, morphological and ecological standpoints. Birds, at over 10,700 living species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
