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El Fin Del Mundo
El Fin del Mundo (Spanish: 'End of the World') is an ancient Pleistocene site near Pitiquito in northwestern Sonora, Mexico. It features Clovis culture period occupation proposed to date to 13,390 calibrated years Before Present, though this is contested. El Fin del Mundo is suggested to be one of the oldest Clovis sites in North America, roughly similar chronologically to the Aubrey site in Denton County, Texas, which produced a radiocarbon date that is almost identical. Clovis hunters In 2011, remains of the gomphothere (elephant relative) ''Cuvieronius'' dating around 13,390 calibrated years BP were found. This was the first such association found in a northern part of the continent where gomphotheres had been thought to have gone extinct 30,000 years ago. In July 2014, it was announced that the "position and proximity of Clovis weapon fragments relative to the gomphothere bones at the site suggest that humans did in fact kill the two animals there. Of the seven Clovis points f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek () 'most' and (; Latinized as ) 'new'. The aridification and cooling trends of the preceding Neogene were continued in the Pleistocene. The climate was strongly variable depending on the glacial cycle, oscillating between cold Glacial period, glacial periods and warmer Interglacial, int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pitiquito
Pitiquito is a small town in Pitiquito Municipality in the northwest of the Mexican state of Sonora. Area and population The municipal area is 11,979.96 km² which makes up 6.46% of the state total. The municipal population counted in 2000 was 9,160The population of the main settlement and municipal seat was 4,862 in 2000. It is located at an elevation of 305 meters. Communities Puerto Libertad (Sonora) Climate In this region the climate is hot and dry with rainfall between 75 and 200 mm a year. Between December and February nighttime temperatures can drop to 8.5 °C below zero while from June to August they can reach 49.5 °C History When the Spanish arrived the area was populated by various sedentary tribes settled along the banks of the Altar and Magdalena rivers. According to local tradition the location took the name of an Indian chief called "Piti" or "Pitic". The mission at Pitiquito was founded by Eusebio Francisco Kino in 1694 with the nam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonora
Sonora (), officially Estado Libre y Soberano de Sonora (), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is divided into Municipalities of Sonora, 72 municipalities; the capital (and largest) city of which is Hermosillo, located in the center of the state. Other large cities include Ciudad Obregón, Nogales, Sonora, Nogales (on the Mexico–United States border, Mexico-United States border), San Luis Río Colorado, and Navojoa. Sonora is bordered by the states of Chihuahua (state), Chihuahua to the east, Baja California to the west (of the north portion) and Sinaloa to the southeast. To the north, it shares a border with the United States, and on the southwest has a significant share of the coastline of the Gulf of California. Sonora's natural geography is divided into three parts: the Sierra Madre Occidental in the east of the state; plains and rolling hills in the center; and the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico
Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundary, maritime boundaries with the Pacific Ocean to the west, the Caribbean Sea to the southeast, and the Gulf of Mexico to the east. Mexico covers 1,972,550 km2 (761,610 sq mi), and is the List of countries by area, thirteenth-largest country in the world by land area. With a population exceeding 130 million, Mexico is the List of countries by population, tenth-most populous country in the world and is home to the Hispanophone#Countries, largest number of native Spanish speakers. Mexico City is the capital and List of cities in Mexico, largest city, which ranks among the List of cities by population, most populous metropolitan areas in the world. Human presence in Mexico dates back to at least 8,000 BC. Mesoamerica, considered a cradle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clovis Culture
The Clovis culture is an archaeological culture from the Paleoindian period of North America, spanning around 13,050 to 12,750 years Before Present (BP). The type site is Blackwater Draw locality No. 1 near Clovis, New Mexico, where stone tools were found alongside the remains of Columbian mammoths in 1929. Clovis sites have been found across North America. The most distinctive part of the Clovis culture toolkit are Clovis points, which are projectile points with a fluted, lanceolate shape.Fluted: Having a flake removed from the base, either on one or both sides.Lanceolate: Tapering to a point at one end, like the head of a lance. Clovis points are typically large, sometimes exceeding in length. These points were multifunctional, also serving as cutting tools. Other stone tools used by the Clovis culture include knives, scrapers, and bifacial tools, with bone tools including beveled rods and shaft wrenches, with possible ivory points also being identified. Hides, wood, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Before Present
Before Present (BP) or "years before present (YBP)" is a time scale used mainly in archaeology, geology, and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1January 1950 as the commencement date (epoch) of the age scale, with 1950 being labelled as the "standard year". The abbreviation "BP" has been interpreted retrospectively as "Before Physics", which refers to the time before nuclear weapons testing artificially altered the proportion of the carbon isotopes in the atmosphere, which scientists must account for when using radiocarbon dating for dates of origin that may fall after this year. In a convention that is not always observed, many sources restrict the use of BP dates to those produced with radiocarbon dating; the alternative notation "RCYBP" stands for the explicit "radio carbon years before present". Usage The BP scale is s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denton County, Texas
Denton County is located in the U.S. state of Texas. As of the 2020 United States census, 2020 census, its population was 906,422, making it the seventh-most populous county in Texas. The county seat is Denton, Texas, Denton. The county, which was named for John B. Denton, was established in 1846. Denton County constitutes part of the Dallas–Fort Worth metroplex. In 2007, it was one of the fastest-growing counties in the United States. History Before the arrival of settlers, various Native Americans in the United States, Native American peoples, including the Kichai people, Kichai and the Lenape, infrequently populated the area. The area was settled by Peters Colony landowners in the early 1840s. Until the Texas annexation, annexation of Texas, the area was considered part of Fannin County, Texas, Fannin County. On April 11, 1846, the First Texas Legislature established Denton County. The county was named for John B. Denton, who was killed while raiding a Native Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gomphothere
Gomphotheres are an extinct group of proboscideans related to modern elephants. First appearing in Africa during the Oligocene, they dispersed into Eurasia and North America during the Miocene and arrived in South America during the Pleistocene as part of the Great American Interchange. Gomphotheres are a paraphyletic group ancestral to Elephantidae, which contains modern elephants, as well as Stegodontidae. While most famous forms such as '' Gomphotherium'' had long lower jaws with tusks, the ancestral condition for the group, some later members developed shortened (brevirostrine) lower jaws with either vestigial or no lower tusks and outlasted the long-jawed gomphotheres. This change made them look very similar to modern elephants, an example of parallel evolution. During the Pliocene and Early Pleistocene, the diversity of gomphotheres declined, ultimately becoming extinct outside of the Americas. The last two genera, '' Cuvieronius'' ranging southern North America to weste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuvieronius
''Cuvieronius'' is an extinct New World genus of gomphothere which ranged from southern North America to western South America during the Pleistocene epoch. Reaching a shoulder height of and a body mass of , it was on average shorter but comparable in body mass to an Asian elephant. ''Cuvieronius'' inhabited subtropical and tropical latitudes in environments ranging from grasslands to tropical rainforest. Among the last gomphotheres along with the South American ''Notiomastodon'', it became extinct as part of the end Pleistocene-extinction event, approximately 12,000 years ago, along with most other large mammals in the Americas. The extinctions followed the arrival of humans to the Americas, and evidence has been found for human hunting of ''Cuvieronius,'' which may have been a factor in its extinction. Taxonomy The species now known as ''Cuvieronius hyodon'' was among the first fossil animals from the New World to be studied. The first remains of this species were recovered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instituto Nacional De Antropología E Historia
The Instituto Nacional de Antropología e Historia (INAH, ''National Institute of Anthropology and History'') is a Federal government of the United Mexican States, Mexican federal government bureau established in 1939 to guarantee the research, preservation, protection, and promotion of the prehistoric, Archaeology, archaeological, Anthropology, anthropological, History, historical, and Paleontology, paleontological heritage of Mexico. Its creation has played a key role in preserving the Culture of Mexico, Mexican cultural heritage. Its current national headquarters are housed in the Palace of the Marqués del Apartado. INAH and the Instituto Nacional de Bellas Artes y Literatura (INBAL) are tasked with cataloging and protecting monuments and buildings regarded as cultural patrimony. INAH is entrusted with 'archaeological' (pre-Hispanic and paleontological) and 'historical' (post-Conquest 16th to 19th centuries) structures, zones and remnants, while INBAL is entrusted with 'ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clovis Point
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] |
Science Daily
''ScienceDaily'' is an American website launched in 1995 that aggregates press releases and publishes lightly edited press releases (a practice called churnalism) about science, similar to Phys.org and EurekAlert!. History The site was founded by married couple Dan and Michele Hogan in 1995; Dan Hogan formerly worked in the public affairs department of Jackson Laboratory writing press releases. The site makes money from selling advertisements. the site said that it had grown "from a two-person operation to a full-fledged news business with worldwide contributors". At the time, it was run out of the Hogans' home, had no reporters, and only reprinted press releases. In 2012, Quantcast ranked it at 614 with 2.6 million U.S. visitors. Sections As of August 2023, ''ScienceDaily'' mainly has five sections, Health, Tech, Enviro, Society, and Quirky, the last of which includes the top news. References External links * Alexa - ScienceDaily��{{Webarchive, url=https://web.a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
