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Herto Man
Herto Man refers to human remains (''Homo sapiens'') discovered in 1997 from the Upper Herto member of the Bouri Formation in the Afar Triangle, Ethiopia. The remains have been dated as between 154,000 and 160,000 years old. The discovery of Herto Man was especially significant at the time, falling within a long gap in the fossil record between 300 and 100 thousand years ago and representing the oldest dated ''H. sapiens'' remains then described. In the original description paper, these 12 (at minimum) individuals were described as falling just outside the umbrella of "anatomically modern human". Thus, Herto Man was classified into a new subspecies as "''Homo sapiens idaltu''" ( "elder"). It supposedly represented a transitional morph between the more archaic '' H. (s.?) rhodesiensis'' and ''H. s. sapiens'' (that is, a stage in a chronospecies). Subsequent researchers have rejected this classification. The validity of such subspecies is difficult to justify because of the vague de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human
Humans (''Homo sapiens'') or modern humans are the most common and widespread species of primate, and the last surviving species of the genus ''Homo''. They are Hominidae, great apes characterized by their Prehistory of nakedness and clothing#Evolution of hairlessness, hairlessness, bipedality, bipedalism, and high Human intelligence, intelligence. Humans have large Human brain, brains, enabling more advanced cognitive skills that facilitate successful adaptation to varied environments, development of sophisticated tools, and formation of complex social structures and civilizations. Humans are Sociality, highly social, with individual humans tending to belong to a Level of analysis, multi-layered network of distinct social groups — from families and peer groups to corporations and State (polity), political states. As such, social interactions between humans have established a wide variety of Value theory, values, norm (sociology), social norms, languages, and traditions (co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neanderthal
Neanderthals ( ; ''Homo neanderthalensis'' or sometimes ''H. sapiens neanderthalensis'') are an extinction, extinct group of archaic humans who inhabited Europe and Western and Central Asia during the Middle Pleistocene, Middle to Late Pleistocene. Neanderthal extinction occurred roughly 40,000 years ago with the immigration of modern humans (Cro-Magnons), but Neanderthals in Gibraltar may have persisted for thousands of years longer. The first recognised Neanderthal fossil, Neanderthal 1, was discovered in 1856 in the Neander Valley, Germany. At first, Neanderthal 1 was considered to be one of the racial hierarchy, lower races in accord with historical race concepts. As more fossils were discovered through the early 20th century, Neanderthals became characterised most especially by Marcellin Boule as a unique species of underdeveloped human. By the mid-20th century, human evolution was described as progressing from an apelike ancestor, through a "Neanderthal phase", ending ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Ferrassie 1
La Ferrassie 1 (LF1) is a male Neanderthal skeleton estimated to be 58–50,000 years old. It was discovered at the La Ferrassie site in France by Louis Capitan and Denis Peyrony in 1909. The skull is the most complete Neanderthal skull ever found. With a cranial capacity of 1641 cm3, it is the second largest hominid skull ever discovered, after Amud 1. The skull displays many of the "classic" examples of Neanderthal anatomy, including a low, sloping forehead and large nasal openings.The teeth are well preserved and the incisors are heavily worn down, suggesting they were used to hold objects. His leg and foot bones make it clear that Neanderthals walked upright like modern humans. However, additional bones were also discovered. Along with the skull; the scapulae, pelvis, hand, and foot remains were identified. The hand and foot had minor damage. The hands and fingers have been linked to rare conditions and the teeth have also been the subject matter to many human ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qafzeh Cave
Qafzeh Cave (Hebrew: , Arabic: ) also known by other names, is a prehistoric archaeological site located at the bottom of Mount Precipice in the Jezreel Valley of Lower Galilee south of Nazareth, Israel. Important remains of prehistoric people were discovered on the site - some of the oldest examples in the world, outside of Africa, of virtually anatomically modern human beings. These were discovered on the ledge just outside the cave, where 18 layers from the Middle Paleolithic era were identified. The interior of the cave contains layers ranging from the Neolithic era to the Bronze Age. Names The Arabic name of the mountain is Jebel el-Qafzeh, 'Mount of the Leap', and the cave's name is derived from it, Qafzeh Cave, sometimes spelled Qafza Cave, with article becoming al-Kafza (Cave). By translation to Hebrew, the name becomes Meʿarat Har HaKfitza, 'Leap Mount Cave', or sometimes Mt. HaKfitza Cave, HaKfitza(h) Cave, or Meʿarat Qafzeh. Another Hebrew name is Meʿarat Kedumim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klasies River Caves
The Klasies River Caves are a series of caves located east of the Klasies River Mouth on the Tsitsikamma Mountains, Tsitsikamma coast in the Humansdorp district of Eastern Cape, Eastern Cape Province, South Africa. The Klasies River Main (KRM) site consists of 3 main caves and 2 shelters located within a cliff on the southern coast of the Eastern Cape. The site provides evidence for developments in stone tool technology, evolution of modern human anatomy and behavior, and changes in paleoecology and climate in Southern Africa based on evidence from plant remains. Site exposition Klasies River Cave is located on the border of the Tsitsikamma mountain range on the southeastern coast of Africa. The site sits within the Greater Cape Floristic region, characterized by the fynbos biome; however the Klasies River Cave environment is mixed woods and shrubby brushland and maintains a temperate climate. Klasies River main site is located on a sandstone cliff less than 1 kilometer from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Clark Howell
Francis Clark Howell (November 27, 1925 – March 10, 2007), generally known as F. Clark Howell, was an American anthropologist. Born in Kansas City, Missouri, F. Clark Howell grew up in Kansas, where he became interested in natural history. He served in the U.S. Navy during World War II, from 1944 to 1946 in the Pacific Theater. Howell was educated at the University of Chicago, where he received his Ph.B., A.M. and Ph.D. degrees under the tutelage of Sherwood L. Washburn. Dr. Howell died of metastatic lung cancer on March 10, 2007, at age 81 at his home in Berkeley, California. Academic career Howell began his career in the Anatomy Department of Washington University in St. Louis in 1953, and stayed there for only two years before moving back to his alma mater, the University of Chicago. He went on to spend the next 25 years of his career there in the Department of Anthropology. He achieved a professorship in 1962 and became chairman of the department in 1966. In 1970, Ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gen Suwa
Gen Suwa (born 1954) is a Japanese paleoanthropologist. He is known for his contributions to the understanding of the evolution of early hominids, including the discovery of a tooth from a hominid that was more than one million years older than the oldest previously known hominid. The discovery changed scientific opinion regarding the ancestral splits between humans, chimps and gorillas. A professor at The University Museum of the University of Tokyo, Suwa is a foreign associate of the National Academy of Sciences and a recipient of the Asahi Prize. Biography Suwa completed an undergraduate degree in biology from the University of Tokyo, and he earned a master's degree in biological anthropology from the same institution in 1980. He earned a Ph.D. in anthropology at the University of California, Berkeley. He began to study hominid fossils in Ethiopia during his doctoral studies. He worked with Berkeley anthropology professor Tim D. White and has continued to collaborate with him a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recent African Origin Of Modern Humans
The recent African origin of modern humans or the "Out of Africa" theory (OOA) is the most widely accepted paleoanthropology, paleo-anthropological model of the geographic origin and Early human migrations, early migration of early modern human, anatomically modern humans (''Human, Homo sapiens''). It follows the early expansions of hominins out of Africa, accomplished by ''Homo erectus'' and then ''Neanderthal, Homo neanderthalensis''. The model proposes a "monogenism, single origin" of ''Human, Homo sapiens'' in the taxonomic sense, precluding parallel evolution in other regions of traits considered anatomically modern humans, anatomically modern, but not precluding multiple Archaic human admixture with modern humans, admixture between ''H. sapiens'' and archaic humans in Europe and Asia. ''H. sapiens'' most likely developed in the Horn of Africa between 300,000 and 200,000 years ago, although an alternative hypothesis argues that diverse morphological features of ''H. sap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argon–argon Dating
Argon–argon (or 40Ar/39Ar) dating is a radiometric dating method invented to supersede Potassium-argon dating, potassiumargon (K/Ar) dating in accuracy. The older method required splitting samples into two for separate potassium and argon measurements, while the newer method requires only one rock fragment or mineral grain and uses a single measurement of isotopes of argon, argon isotopes. 40Ar/39Ar dating relies on neutron irradiation from a nuclear reactor to convert a stable form of potassium (39K) into the radioactive 39Ar. As long as a standard of known age is co-irradiated with unknown samples, it is possible to use a single measurement of argon isotopes to calculate the 40K/40Ar* ratio, and thus to calculate the age of the unknown sample. 40Ar* refers to the radiogenic 40Ar, i.e. the 40Ar produced from radioactive decay of 40K. 40Ar* does not include atmospheric argon adsorbed to the surface or inherited through diffusion and its calculated value is derived from measuring t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hominin
The Hominini (hominins) form a taxonomic tribe of the subfamily Homininae (hominines). They comprise two extant genera: ''Homo'' (humans) and '' Pan'' (chimpanzees and bonobos), and in standard usage exclude the genus '' Gorilla'' ( gorillas), which is grouped separately within the subfamily Homininae. The term Hominini was originally introduced by Camille Arambourg (1948), who combined the categories of ''Hominina'' and ''Simiina'' pursuant to Gray's classifications (1825). Traditionally, chimpanzees, gorillas and orangutans were grouped together, excluding humans, as pongids. Since Gray's classifications, evidence accumulating from genetic phylogeny confirmed that humans, chimpanzees, and gorillas are more closely related to each other than to the orangutan. The orangutans were reassigned to the family Hominidae ( great apes), which already included humans; and the gorillas were grouped as a separate tribe (Gorillini) of the subfamily Homininae. Still, details of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Premolar
The premolars, also called premolar Tooth (human), teeth, or bicuspids, are transitional teeth located between the Canine tooth, canine and Molar (tooth), molar teeth. In humans, there are two premolars per dental terminology#Quadrant, quadrant in the permanent teeth, permanent set of teeth, making eight premolars total in the mouth. They have at least two Cusp (dentistry), cusps. Premolars can be considered transitional teeth during chewing, or mastication. They have properties of both the canines, that lie anterior and molars that lie Posterior (anatomy), posterior, and so food can be transferred from the canines to the premolars and finally to the molars for grinding, instead of directly from the canines to the molars. Human anatomy The premolars in humans are the maxillary first premolar, maxillary second premolar, mandibular first premolar, and the mandibular second premolar. Premolar teeth by definition are permanent teeth Anatomical terms of location#Proximal and distal, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
