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Krapina Neanderthal Site
Krapina Neanderthal site, also known as Hušnjakovo Hill () is a Paleolithic archaeological site located near Krapina, Croatia. At the turn of the 20th century, Dragutin Gorjanović-Kramberger recovered faunal remains as well as stone tools and human remains at the site. Krapina represents the largest known recovery of human skeletal remains from any Upper Pleistocene site. Site history The site was first discovered by Dragutin Gorjanović-Kramberger, who excavated the site between 1899 and 1905 and subsequently published two monographs, which were the first publications on the Neanderthals found here. The prehistoric site itself is located in a collapsed cave, nestled in a sandstone bluff overlooking the Krapinica River in Hrvatsko Zagorje. More recently, it was determined that the site was about 120-130 kyr. Researchers determined its date by using Electron spin resonance dating, ESR and Uranium–thorium dating, U-series dating. The methods were also used for determining the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krapina
Krapina (; ) is a town in northern Croatia and the administrative centre of Krapina-Zagorje County with a population of 4,482 (2011) and a total municipality population of 12,480 (2011). Krapina is located in the hilly Zagorje region of Croatia, approximately from both Zagreb and Varaždin. Population The following settlements comprise the Krapina municipality: * Bobovje, population 510 * Doliće, Croatia, Doliće, population 436 * Donja Šemnica, population 912 * Gornja Pačetina, population 404 * Krapina, population 4,471 * Lazi Krapinski, population 79 * Lepajci, population 391 * Mihaljekov Jarek, population 469 * Podgora Krapinska, population 565 * Polje Krapinsko, population 666 * Pretkovec, population 66 * Pristava Krapinska, population 214 * Strahinje, population 328 * Straža Krapinska, population 42 * Škarićevo, population 707 * Šušelj Brijeg, population 4 * Tkalci, population 432 * Trški Vrh, population 399 * Velika Ves, Croatia, Velika Ves, population 727 * Vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
François Bordes
François Bordes (December 30, 1919 – April 30, 1981), also known by the pen name of Francis Carsac, was a French scientist, geologist, archaeologist, and science fiction writer. Biography He was a professor of prehistory and quaternary geology at the Faculty of Sciences, University of Bordeaux 1. He decisively renewed the approach to focusing on prehistoric lithic industries, introducing statistical studies in typology and expanding the use of experimental flint knapping. He was internationally known among archaeologists for his ability to replicate ancient stone implements; his technique was showcased in a photo essay in the "Early Man" volume of the Life Nature Library. He also published many science fiction novels under his pen name. In the USSR the science fiction of Carsac was very popular. He was translated and published into Russian as well as Romanian, Bulgarian, Lithuanian, Latvian, Hungarian, Estonian, Portuguese, amongst others. However, no transla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulna
The ulna or ulnar bone (: ulnae or ulnas) is a long bone in the forearm stretching from the elbow to the wrist. It is on the same side of the forearm as the little finger, running parallel to the Radius (bone), radius, the forearm's other long bone. Longer and thinner than the radius, the ulna is considered to be the smaller long bone of the lower arm. The corresponding bone in the Human leg#Structure, lower leg is the fibula. Structure The ulna is a long bone found in the forearm that stretches from the elbow to the wrist, and when in standard anatomical position, is found on the Medial (anatomy), medial side of the forearm. It is broader close to the elbow, and narrows as it approaches the wrist. Close to the elbow, the ulna has a bony Process (anatomy), process, the olecranon process, a hook-like structure that fits into the olecranon fossa of the humerus. This prevents hyperextension and forms a hinge joint with the trochlea of the humerus. There is also a radial notch for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radius (bone)
The radius or radial bone (: radii or radiuses) is one of the two large bones of the forearm, the other being the ulna. It extends from the Anatomical terms of location, lateral side of the Elbow-joint, elbow to the thumb side of the wrist and runs parallel to the ulna. The ulna is longer than the radius, but the radius is thicker. The radius is a long bone, Prism (geometry), prism-shaped and slightly curved longitudinally. The radius is part of two joint (anatomy), joints: the elbow and the wrist. At the elbow, it joins with the capitulum of the humerus, and in a separate region, with the ulna at the radial notch. At the wrist, the radius forms a joint with the ulna bone. The corresponding bone in the human leg, lower leg is the tibia. Structure The long narrow medullary cavity is enclosed in a strong wall of compact bone. It is thickest along the interosseous border and thinnest at the extremities, same over the cup-shaped articular surface (fovea) of the head. The tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humerus
The humerus (; : humeri) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius (bone), radius and ulna, and consists of three sections. The humeral upper extremity of humerus, upper extremity consists of a rounded head, a narrow neck, and two short processes (tubercles, sometimes called tuberosities). The body of humerus, body is cylindrical in its upper portion, and more prism (geometry), prismatic below. The lower extremity of humerus, lower extremity consists of 2 epicondyles, 2 processes (trochlea of the humerus, trochlea and capitulum of the humerus, capitulum), and 3 fossae (radial fossa, coronoid fossa, and olecranon fossa). As well as its true anatomical neck, the constriction below the greater and lesser tubercles of the humerus is referred to as its Surgical neck of the humerus, surgical neck due to its tendency to fracture, thus often becoming the focus of surgeons. Etymology The word ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirko Malez
Mirko Malez (November 5, 1924 – August 23, 1990) was a prominent Croatian palaeontologist, speleologist, geo-scientist, ecologist and natural history writer. He was known as a "pioneer of Croatian speleoarchaeology". He was a member of the Yugoslav Academy, JAZU (present-day Croatian, HAZU - Croatian Academy of Sciences and Arts and one of only four Croatian PhDs of speleology (Josip Poljak 1922, Mirko Malez 1963, Srećko Božičević 1985, and Mladen Garašić 1986). Thanks to Malez's popularization of science, Varaždin County, in northern Croatia, is also known as a "cradle of the Palaeolithic age". In his honor four new species were named: ''Dalmatichthys, Dalmatichthys malezi'' (Radovčić 1975), ''Ilyocypris, Ilyocypris malezi'' (Sokač 1978), ''Mimomys, Mimomys malezi'' (Rabeder 1983) and ''Vaccinites, Vaccinites malezi'' (Slišković 1991). Most of his papers and research interests were directed towards fossil mammals of the Pleistocene and the paleontological proces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bone Marrow
Bone marrow is a semi-solid biological tissue, tissue found within the Spongy bone, spongy (also known as cancellous) portions of bones. In birds and mammals, bone marrow is the primary site of new blood cell production (or haematopoiesis). It is composed of Blood cell, hematopoietic cells, marrow adipose tissue, and supportive stromal cells. In adult humans, bone marrow is primarily located in the Rib cage, ribs, vertebrae, sternum, and Pelvis, bones of the pelvis. Bone marrow comprises approximately 5% of total body mass in healthy adult humans, such that a person weighing 73 kg (161 lbs) will have around 3.7 kg (8 lbs) of bone marrow. Human marrow produces approximately 500 billion blood cells per day, which join the Circulatory system, systemic circulation via permeable vasculature sinusoids within the medullary cavity. All types of Hematopoietic cell, hematopoietic cells, including both Myeloid tissue, myeloid and Lymphocyte, lymphoid lineages, are create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Cannibalism
Human cannibalism is the act or practice of Human, humans eating the Meat, flesh or internal organs of other human beings. A person who practices cannibalism is called a cannibal. The meaning of "cannibalism" has been extended into zoology to describe animals consuming parts of individuals of the same species as food. Early modern human, Anatomically modern humans, Neanderthals, and ''Homo antecessor'' are known to have practised cannibalism to some extent in the Pleistocene. Cannibalism was occasionally practised in Egypt during ancient Egypt, ancient and Roman Egypt, Roman times, as well as later during severe famines. The Island Caribs of the Lesser Antilles, whose name is the origin of the word ''cannibal'', acquired a long-standing reputation as eaters of human flesh, reconfirmed when their legends were recorded in the 17th century. Some controversy exists over the accuracy of these legends and the prevalence of actual cannibalism in the culture. Reports describing cannib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chalcedony
Chalcedony ( or ) is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. These are both silica minerals, but they differ in that quartz has a trigonal crystal structure, while moganite is monoclinic. Chalcedony's standard chemical structure (based on the chemical structure of quartz) is SiO2 (silicon dioxide). Chalcedony has a waxy luster, and may be semitransparent or translucent. It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black. The color of chalcedony sold commercially is often enhanced by dyeing or heating. The name ''chalcedony'' comes from the Latin (alternatively spelled ) and is probably derived from the town of Chalcedon in Asia Minor. The name appears in Pliny the Elder's as a term for a translucent kind of jaspis. Another reference to a gem by the name of () is found in the Book of Revelation (21:19); however, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opals
Opal is a hydrated amorphous form of silicon dioxide, silica (SiO2·''n''H2O); its water content may range from 3% to 21% by weight, but is usually between 6% and 10%. Due to the amorphous (chemical) physical structure, it is classified as a mineraloid, unlike crystalline forms of silica, which are considered minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock (geology), rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. The name ''opal'' is believed to be derived from the Sanskrit word (), which means 'jewel', and later the Greek derivative (). There are two broad classes of opal: precious and common. Precious opal displays play-of-color (iridescence); common opal does not. Play-of-color is defined as "a pseudo chromatic optical effect resulting in flashes of colored light from certain minerals, as they are turned in white light." The internal structure of precious opal cause ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The Atom, atoms are linked in a continuous framework of SiO4 silicon–oxygen Tetrahedral molecular geometry, tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of Silicon dioxide, SiO2. Quartz is, therefore, classified structurally as a Silicate mineral#Tectosilicates, framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chert
Chert () is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is characteristically of biological origin, but may also occur inorganically as a precipitation (chemistry), chemical precipitate or a diagenesis, diagenetic replacement, as in petrified wood. Chert is typically composed of the petrified remains of siliceous ooze, the biogenic sediment that covers large areas of the deep ocean floor, and which contains the silicon skeletal remains of diatoms, Dictyochales, silicoflagellates, and radiolarians. Precambrian cherts are notable for the presence of fossil cyanobacteria. In addition to Micropaleontology, microfossils, chert occasionally contains macrofossils. However, some chert is devoid of any fossils. Chert varies greatly in color, from white to black, but is most often found as gray, brown, grayish brown and light green to rusty redW.L. Roberts, T.J. Campbell, G.R. Rapp Jr., ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
