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Minatogawa Station In 1928
The Minatogawa man or Minatogawa specimens are the prehistoric population of Okinawa, Japan, represented by four skeletons, two male and two female, and some isolated bones dated between 20,000 and 22,000 years BCE. They are among the oldest skeletons of hominins yet discovered in Japan. History of the finds The skeletons were found at the Minatogawa limestone quarry, located 10 km south of Naha, near the southern tip of the island. Okinawan businessman and amateur archaeologist Seiho Oyama noticed fossil bone fragments in some building stone blocks he had purchased from the quarry, and for two years he kept watch as the quarry was worked. In 1968, Oyama reported the finding of a human bone at the quarry to Hisashi Suzuki, a professor at Tokyo University. A team led by Suzuki excavated the site during three seasons (1968, 1970 and 1974). Their finds were described in 1982. The skeletons are now in the Anthropology Museum, Tokyo University. Descr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistory
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cranial Capacity
The size of the brain is a frequent topic of study within the fields of anatomy, biological anthropology, animal science and evolution. Brain size is sometimes measured by weight and sometimes by volume (via MRI scans or by skull volume). Neuroimaging intelligence testing can be used to study the volumetric measurements of the brain. Regarding "intelligence testing", a question that has been frequently investigated is the relation of brain size to intelligence. This question is quite controversial and will be addressed further in the section on intelligence. The measure of brain size and cranial capacity is not just important to humans, but to all mammals. Humans In humans, the right cerebral hemisphere is typically larger than the left, whereas the cerebellar hemispheres are typically closer in size. The adult human brain weighs on average about . In men the average weight is about 1370 g and in women about 1200 g. The volume is around 1260 cm3 in men and 1130 &nbs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeology Of Japan
Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landscapes. Archaeology can be considered both a social science and a branch of the humanities. It is usually considered an independent academic discipline, but may also be classified as part of anthropology (in North America – the four-field approach), history or geography. Archaeologists study human prehistory and history, from the development of the first stone tools at Lomekwi in East Africa 3.3 million years ago up until recent decades. Archaeology is distinct from palaeontology, which is the study of fossil remains. Archaeology is particularly important for learning about prehistoric societies, for which, by definition, there are no written records. Prehistory includes over 99% of the human past, from the Paleolithic until the adve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of The Ryukyu Islands
This article is about the history of the Ryukyu Islands southwest of the main islands of Japan. Etymology The name "Ryūkyū" originates from Chinese writings. The earliest references to "Ryūkyū" write the name as 琉虬 and 流求 () in the Chinese history ''Book of Sui'' in 607. It is a descriptive name, meaning "glazed horn-dragon". The origin of the term "Okinawa" remains unclear, although "Okinawa" ( Okinawan: Uchinaa) as a term was used in Okinawa. There was also a divine woman named "Uchinaa" in the book ''Omoro Sōshi'', a compilation of ancient poems and songs from Okinawa Island. This suggests the presence of a divine place named Okinawa. The Chinese monk Jianzhen, who traveled to Japan in the mid-8th century CE to promote Buddhism, wrote "Okinawa" as 阿児奈波 (). The Japanese map series Ryukyu Kuniezu labeled the island as in 1644. The current Chinese characters (kanji) for Okinawa (沖縄) were first written in the 1702 version of Ryukyu Kuniezu. Early hist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shiraho Saonetabaru Cave Ruins
is a paleoanthropological site located on Ishigaki Island of the Yaeyama Islands in Japan. Shiraho Saonetabaru is a limestone cave. It was discovered in 2007 when plans for the New Ishigaki Airport were being developed. Remains of human heads, feet and arms were found, in all 9 bone fossils, by the ''Okinawa Limestone Cave Association'' between 2007 and 2009, and three human samples were dated to between 20,000-16,000 years before present. In the ruins were also found bones from wild boar and birds (one animal bone calibrated at 12,000 BP), while during the three months in 2011 were discovered approximately 300 human bones from the stratum between 24,000-20,000 years old. In 2015, researchers from the University of the Ryukyus and University of Tokyo succeeded in radiocarbon dating three out of five of the bones tested. The three bones yielded the following dates: (20,030 to 18,100 years BP), (22,890 to 22,400 years BP) and (24,990 to 24,210 years BP). The investigation held ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinza-Abu Cave Man
The is a prehistoric people known from bones found in the Pinza-Abu Cave, near Ueno in Miyako Island, southern Japan. The remains appear to have the modern man anatomical type and have been dated to about 30,000 years ago, i.e. 25,800 ± 900 and 26,800 ± 1,300 before present. The name "Pinza-Abu" literally means "goat cave" in the local Miyakoan language. Findings Between 1974 and 1989, expeditions and surveys were done on six occasions at the Pinza-Abu cave site. The bones found were measured and compared to recent Japanese and the Minatogawa Man. The occipital and supernumerary bones have been reconstructed from the few fragments found to create a nearly complete squama. The occipital squama has especially large features in the sagittal arcs, compared to that of modern Japanese. The right parietal bone has been found largely intact, with only minor fragments missing. Characteristics in the sagittal dimension, however, are much smaller compared to the modern Japanese. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamashita Cave Man
The are the prehistoric humans known from many bones found in the Yamashita limestone cave located on the grounds of the Yamashita First Cave Site Park in Naha, Okinawa, Japan. The remains have been dated at 32,000±1000 years ago. The most important bones found in the cave in Yamashita are those of an approximately 6 to 8-year-old girl."The Paleolithic Age in Okinawa." Ryukyu Cultural Archive. Okinawa Prefectural Board of Education. http://rca.open.ed.jp/web_e/history/story/epoch1/kyusekki_3.html See also * Minatogawa Man * Pinza-Abu Cave Man * Shiraho Saonetabaru Cave Ruins is a paleoanthropological site located on Ishigaki Island of the Yaeyama Islands in Japan. Shiraho Saonetabaru is a limestone cave. It was discovered in 2007 when plans for the New Ishigaki Airport were being developed. Remains of human heads ... * History of the Ryukyu Islands References Archaeology of Japan Upper Paleolithic Homo sapiens fossils Peopling of East Asia Paleolithic Ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongoloid
Mongoloid () is an obsolete racial grouping of various peoples indigenous to large parts of Asia, the Americas, and some regions in Europe and Oceania. The term is derived from a now-disproven theory of biological race. In the past, other terms such as " Mongolian race", "yellow", "Asiatic" and "Oriental" have been used as synonyms. The concept of dividing humankind into the Mongoloid, Caucasoid, and Negroid races was introduced in the 1780s by members of the Göttingen School of History. It was further developed by Western scholars in the context of racist ideologies during the age of colonialism. The organization has since been renamed the American Association of Biological Anthropologists. With the rise of modern genetics, the concept of distinct human races in a biological sense has become obsolete. In 2019, the American Association of Biological Anthropologists stated: "The belief in 'races' as natural aspects of human biology, and the structures of inequality (racism) that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon-14 Dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby. It is based on the fact that radiocarbon () is constantly being created in the Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of it contains begins to decrease as the undergoes radioactive decay. Measuring the amount of in a sample from a dead plant or animal, such as a piece of wood or a fragment of bone, provides information that can be used to calcu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charcoal
Charcoal is a lightweight black carbon residue produced by strongly heating wood (or other animal and plant materials) in minimal oxygen to remove all water and volatile constituents. In the traditional version of this pyrolysis process, called charcoal burning, often by forming a charcoal kiln, the heat is supplied by burning part of the starting material itself, with a limited supply of oxygen. The material can also be heated in a closed retort. Modern "charcoal" briquettes used for outdoor cooking may contain many other additives, e.g. coal. This process happens naturally when combustion is incomplete, and is sometimes used in radiocarbon dating. It also happens inadvertently while burning wood, as in a fireplace or wood stove. The visible flame in these is due to combustion of the volatile gases exuded as the wood turns into charcoal. The soot and smoke commonly given off by wood fires result from incomplete combustion of those volatiles. Charcoal burns at a higher temper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incisor
Incisors (from Latin ''incidere'', "to cut") are the front teeth present in most mammals. They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side, top and bottom). Opossums have 18, whereas armadillos have none. Structure Adult humans normally have eight incisors, two of each type. The types of incisor are: * maxillary central incisor (upper jaw, closest to the center of the lips) * maxillary lateral incisor (upper jaw, beside the maxillary central incisor) * mandibular central incisor (lower jaw, closest to the center of the lips) * mandibular lateral incisor (lower jaw, beside the mandibular central incisor) Children with a full set of deciduous teeth (primary teeth) also have eight incisors, named the same way as in permanent teeth. Young children may have from zero to eight incisors depending on the stage of their tooth eruption and tooth development. Typically, the mandibular central incisors erupt first, followed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Mandible
In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower tooth, teeth in place. The mandible sits beneath the maxilla. It is the only movable bone of the skull (discounting the ossicles of the middle ear). It is connected to the temporal bones by the temporomandibular joints. The bone is formed prenatal development, in the fetus from a fusion of the left and right mandibular prominences, and the point where these sides join, the mandibular symphysis, is still visible as a faint ridge in the midline. Like other symphyses in the body, this is a midline articulation where the bones are joined by fibrocartilage, but this articulation fuses together in early childhood.Illustrated Anatomy of the Head and Neck, Fehrenbach and Herring, Elsevier, 2012, p. 59 The word "mandible" derives from the Latin word ''mandibula'', "jawbone" (literally "one used for chewing"), from ''wikt:mandere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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