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Ancient Bison
''Bison antiquus'' is an extinct species of bison that lived in North America during the Late Pleistocene from over 60,000 years ago until around 10,000 years ago. ''Bison antiquus'' was one of the most common large herbivores in North America during this time period. It is the direct ancestor of the living American bison.C. G Van Zyll de Jong , 1986, A systematic study of recent bison, with particular consideration of the wood bison (Bison bison athabascae Rhoads 1898), p.53, National Museum of Natural Sciences History of discovery The first described remains of ''Bison antiquus'' were collected at Big Bone Lick, Kentucky in Pleistocene deposits in the 1850s and only consisted of a fragmentary posterior skull and a nearly complete horn core. The fossil ( ANSP 12990) was briefly described by Joseph Leidy in 1852. Although the original fossils were fragmentary, a complete skull of an old male was discovered in southern California and were described as a new species, ''B. cali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Brea Tar Pits Museum
La Brea Tar Pits comprise an active paleontological research site in urban Los Angeles. Hancock Park was formed around a group of tar pits where natural asphalt (also called asphaltum, bitumen, or pitch; ''brea'' in Spanish) has seeped up from the ground for tens of thousands of years. Over many centuries, the bones of trapped animals have been preserved. The George C. Page Museum is dedicated to researching the tar pits and displaying specimens from the animals that died there. "La Brea Tar Pits" is a registered National Natural Landmark. Formation Tar pits are composed of heavy oil fractions, called gilsonite, which seep from the earth as oil. Crude oil seeps up along the 6th Street Fault from the Salt Lake Oil Field, which underlies much of the Fairfax District north of Hancock Park. The oil reaches the surface and forms pools, becoming asphalt as the lighter fractions of the petroleum biodegrade or evaporate. The asphalt then normally hardens into stubby mounds, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleo-Indians
Paleo-Indians were the first peoples who entered and subsequently inhabited the Americas towards the end of the Late Pleistocene period. The prefix ''paleo-'' comes from . The term ''Paleo-Indians'' applies specifically to the lithic period in the Western Hemisphere and is distinct from the term ''Paleolithic''.''Paleolithic'' specifically refers to the period between million years ago and the end of the Pleistocene in the Eastern Hemisphere. It is not used in New World archaeology. Traditional theories suggest that big-animal hunters crossed the Bering Strait from North Asia into the Americas over a land bridge ( Beringia). This bridge existed from 45,000 to 12,000 BCE (47,000–14,000 BP). Small isolated groups of hunter-gatherers migrated alongside herds of large herbivores far into Alaska. From BCE ( BP), ice-free corridors developed along the Pacific coast and valleys of North America. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bison Occidentalis
''Bison occidentalis'' is an extinct species of bison that lived in North America, from about 11,700 to 5,000 years ago, spanning the end of the Pleistocene to the mid-Holocene. Evolution Some authors consider ''Bison occidentalis'' to be an intermediate species between ''Bison antiquus'' and modern American bison (''Bison bison''), spanning from the Late Pleistocene-Early Holocene and including remains from central North America. However, as the type specimen of ''B. occidentalis'' is from Alaska, other authors have argued that the species should be restricted to remains that region, with suggestions that true ''B. occidentalis'' evolved locally in the region from steppe bison (''Bison priscus'') around 13,000 years ago. Due to this uncertainty, specimens that likely represent intermediates between ''B. antiquus'' and ''B. bison'' in central North America have been referred to as ''B. "occidentalis".'' Some authors have suggested that ''B. bison'' descends from hybridization be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orcas Island
Orcas Island () is the largest of the San Juan Islands of the Pacific Northwest, in northwestern Washington, United States. History and naming of the island The name "Orcas" is a shortened form of ''Horcasitas,'' from Juan Vicente de Güemes Padilla Horcasitas y Aguayo, 2nd Count of Revillagigedo, the Viceroy of New Spain who sent an exploration expedition under Francisco de Eliza to the Pacific Northwest in 1791. During the voyage, Eliza explored part of the San Juan Islands. He did not apply the name Orcas specifically to Orcas Island, but rather to part of the archipelago. In 1847, Henry Kellett assigned the name to Orcas Island during his reorganization of the British Admiralty charts. Kellett's work eliminated the patriotically American names that Charles Wilkes had given to many features of the San Juans during the Wilkes Expedition of 1838–1842. Wilkes had named Orcas Island "Hull Island" after Commodore Isaac Hull. Other features of Orcas Island Wilkes named includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Folsom Point
Folsom points are projectile points associated with the Folsom tradition of North America. The style of tool-making was named after the Folsom site located in Folsom, New Mexico, where the first sample was found in 1908 by George McJunkin within the bone structure of an extinct bison, ''Bison antiquus'', an animal hunted by the Folsom people. The Folsom point was identified as a unique style of projectile point in 1928, after being found in place August 29, 1927. The Folsom point found in association with the extinct bison bones proved to the scientific community that humans had lived in the Americas thousands of years longer than many had previously believed. Description The points are bifacially worked and have a symmetrical, leaf-like shape with a concave base and wide, shallow grooves running almost the entire length of the point. The edges are finely worked. The characteristic groove, known as fluting, may have served to aid hafting to a wooden shaft or dart. Use-wea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arroyo (watercourse)
An arroyo ( (from Spanish Language, Spanish ''arroyo'' (, "brook"))) or wash is a dry Stream#Other terminology, watercourse that temporarily or seasonally fills and flows after sufficient rain. Flash floods are common in arroyos following thunderstorms. It is akin to the Catalan language, Catalan rambla, which stems from the Arabic ''rámla'', "dry river". Similar landforms are referred to as ''wadi'' (in North Africa and Western Asia), ''chapp'' in the Gobi, ''laagate'' in the Kalahari, ''donga'' in South Africa, ''nullah'' in India, ''fiumare'' in Italy, and ''dry valley'' in England. The desert dry wash biome is restricted to the arroyos of the southwestern United States. Arroyos provide a water source to desert animals. Types and processes Arroyos can be natural fluvial landforms or constructed flood control channels. The term usually applies to a Grade (slope), sloped or mountainous terrain in xeric and desert climates. In addition: in many rural communities arroyos are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Reports
''Scientific Reports'' is a peer-reviewed open-access scientific mega journal published by Nature Portfolio, covering all areas of the natural sciences. The journal was established in 2011. The journal states that their aim is to assess solely the scientific validity of a submitted paper, rather than its perceived importance, significance, or impact. In September 2016, the journal became the largest in the world by number of articles, overtaking '' PLOS ONE''. Abstracting and indexing The journal is abstracted and indexed in the Chemical Abstracts Service, the Science Citation Index Expanded, and selectively in Index Medicus/MEDLINE/PubMed. According to the ''Journal Citation Reports'', the journal has a 2023 impact factor 3.8. Reviewing policy The ''Guide to Referees'' states that to be published, "a paper must be scientifically valid and technically sound in methodology and analysis", and reviewers have to ensure manuscripts "are not assessed based on their perceived impor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clovis Points
Clovis points are the characteristically fluted projectile points associated with the New World Clovis culture, a prehistoric Paleo-American culture. They are present in dense concentrations across much of North America and they are largely restricted to the north of South America. There are slight differences in points found in the Eastern United States sometimes leading them to be called "Clovis-like". Clovis points date to the Early Paleoindian period, with all known points dating from roughly 13,400–12,700 years ago (11,500 to 10,800 C14 years BP). As an example, Clovis remains at the Murry Springs Site date to around 12,900 calendar years ago (10,900 ± 50 C14 years BP). Clovis fluted points are named after the city of Clovis, New Mexico, where examples were first found in 1929 by Ridgely Whiteman. A typical Clovis point is a medium to large lanceolate point with sharp edges, a third of an inch thick, one to two inches wide, and about long. Sides are parallel to convex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Carolina
South Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders North Carolina to the north and northeast, the Atlantic Ocean to the southeast, and Georgia (U.S. state), Georgia to the west and south across the Savannah River. Along with North Carolina, it makes up the Carolinas region of the East Coast of the United States, East Coast. South Carolina is the List of U.S. states and territories by area, 11th-smallest and List of U.S. states and territories by population, 23rd-most populous U.S. state with a recorded population of 5,118,425 according to the 2020 United States census, 2020 census. In , its GDP was $213.45 billion. South Carolina is composed of List of counties in South Carolina, 46 counties. The capital is Columbia, South Carolina, Columbia with a population of 136,632 in 2020; while its List of municipalities in South Carolina, most populous city is Charleston, South Carolina, Charleston with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Carolina
North Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, South Carolina to the south, Georgia (U.S. state), Georgia to the southwest, and Tennessee to the west. The state is the List of U.S. states and territories by area, 28th-largest and List of U.S. states and territories by population, 9th-most populous of the List of states and territories of the United States, United States. Along with South Carolina, it makes up the Carolinas region of the East Coast of the United States, East Coast. At the 2020 United States census, 2020 census, the state had a population of 10,439,388. Raleigh, North Carolina, Raleigh is the state's List of capitals in the United States, capital and Charlotte, North Carolina, Charlotte is its List of municipalities in North Carolina, most populous and one of the fastest growing cities in the United States. The Charl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleo-Indian
Paleo-Indians were the first peoples who entered and subsequently inhabited the Americas towards the end of the Late Pleistocene period. The prefix ''paleo-'' comes from . The term ''Paleo-Indians'' applies specifically to the lithic period in the Western Hemisphere and is distinct from the term ''Paleolithic''.''Paleolithic'' specifically refers to the period between million years ago and the end of the Pleistocene in the Eastern Hemisphere. It is not used in New World archaeology. Traditional theories suggest that big-animal hunters crossed the Bering Strait from North Asia into the Americas over a land bridge (Beringia). This bridge existed from 45,000 to 12,000 BCE (47,000–14,000 BP). Small isolated groups of hunter-gatherers migrated alongside herds of large herbivores far into Alaska. From BCE ( BP), ice-free corridors developed along the Pacific coast and valleys of North America. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crawford, Nebraska
Crawford is a city in Dawes County, Nebraska, Dawes County, Nebraska, United States, in the Great Plains region. The population was 997 at the 2010 United States Census, 2010 census. It was incorporated in 1886 and was named for the late Captain Emmet Crawford, who had been stationed at nearby Fort Robinson. History The Fremont, Elkhorn and Missouri Valley Railroad reached Fort Robinson in 1886 on its way to Wyoming. Several miles east of the Fort, the railroad passed through a tree claim belonging to William Annin (also spelled "Annon"), who sold his claim for a new townsite. The "tent city" that sprang up around the railroad was named after Lt. Emmet Crawford, who had been formerly stationed at Fort Robinson but was killed in Mexico in January 1886. The town's original plat was filed on June 21, 1886 by the Western Townsite Company. E.A. Thompson and William D. Edger (editor of the original ''Crawford Clipper'') circulated a petition for Crawford to become a village, but upon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
