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Australopithecus Fossils
''Australopithecus'' (, ; ) is a genus of early hominins that existed in Africa during the Late Pliocene and Early Pleistocene. The genus ''Homo'' (which includes modern humans) emerged within ''Australopithecus'', as sister to e.g. ''Australopithecus sediba''. Also the genera ''Paranthropus'' and ''Kenyanthropus'' emerged within ''Australopithecus''. ''Australopithecus'' is a member of the subtribe Australopithecina, which sometimes also includes ''Ardipithecus'', though the term "australopithecine" is sometimes used to refer only to members of ''Australopithecus''. Species include ''A. garhi'', '' A. africanus'', ''A. sediba'', ''A. afarensis, A. anamensis, A. bahrelghazali'' and '' A. deyiremeda''. Debate exists as to whether some ''Australopithecus'' species should be reclassified into new genera, or if ''Paranthropus'' and ''Kenyanthropus'' are synonymous with ''Australopithecus'', in part because of the taxonomic inconsistency. The earliest known member of the genus, ''A. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raymond Dart
Raymond Arthur Dart (4 February 1893 – 22 November 1988) was an Australian anatomist and anthropologist, best known for his involvement in the 1924 discovery of the first fossil ever found of ''Australopithecus africanus'', an extinct hominin closely related to humans, at Taung in the North of South Africa in the Northwest province. Early life Raymond Dart was born in Toowong, a suburb of Brisbane, Queensland, Australia, the fifth of nine children and son of a farmer and tradesman. His birth occurred during the 1893 flood which filled his parents' home and shop in Toowong. The family moved alternately between their country property near Laidley and their shop in Toowong. The young Dart attended Toowong State School, Blenheim State School and earned a scholarship to Ipswich Grammar School from 1906 to 1909. Dart considered becoming a medical missionary to China and wished to study medicine at the University of Sydney, but his father argued that he should accept the scholars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Pliocene
Late may refer to: * LATE, an acronym which could stand for: ** Limbic-predominant age-related TDP-43 encephalopathy, a proposed form of dementia ** Local-authority trading enterprise, a New Zealand business law ** Local average treatment effect, a concept in econometrics Music * ''Late'' (album), a 2000 album by The 77s * Late!, a pseudonym used by Dave Grohl on his ''Pocketwatch'' album * Late (rapper), an underground rapper from Wolverhampton * "Late" (song), a song by Blue Angel * "Late", a song by Kanye West from ''Late Registration'' Other * Late (Tonga), an uninhabited volcanic island southwest of Vavau in the kingdom of Tonga * "Late" (''The Handmaid's Tale''), a television episode * LaTe, Oy Laivateollisuus Ab, a defunct shipbuilding company * Late may refer to a person who is Dead See also * * * ''Lates'', a genus of fish in the lates perch family * Later (other) * Tardiness * Tardiness (scheduling) In scheduling, tardiness is a measure of a delay in exe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Anatomy
The ''Journal of Anatomy'' is a monthly peer-reviewed scientific journal published by Wiley on behalf of the Anatomical Society. It covers all aspects of anatomy and morphology. The journal was first published in 1867 and was originally known as the ''Journal of Anatomy and Physiology'', obtaining its current title in October 1916. The editors-in-chief are Phil Cox (Hull York Medical School), Thomas H. Gillingwater (University of Edinburgh), Stefan Milz (Ludwig-Maximilians University), and Neil Vargesson (University of Aberdeen). According to the ''Journal Citation Reports'', the journal has a 2021 impact factor of 2.921. In conjunction with their centennial in 2009, the international Special Libraries Association included the ''Journal of Anatomy'' as one of the 100 most influential journals in biology and medicine over the past 100 years. History The journal was established in 1867 as the ''Journal of Anatomy and Physiology''. The journal was conceived at the 1866 meeting of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capitate
The capitate bone is a bone in the human wrist found in the center of the carpal bone region, located at the distal end of the radius and ulna bones. It articulates with the third metacarpal bone (the middle finger) and forms the third carpometacarpal joint. The capitate bone is the largest of the carpal bones in the human hand. It presents, above, a rounded portion or head, which is received into the concavity formed by the scaphoid and lunate bones; a constricted portion or neck; and below this, the body.''Gray's Anatomy'' (1918). See infobox. The bone is also found in many other mammals, and is homologous with the "third distal carpal" of reptiles and amphibians. Structure The capitate is the largest carpal bone found within the hand. The capitate is found within the distal row of carpal bones. The capitate lies directly adjacent to the metacarpal of the ring finger on its distal surface, has the hamate on its ulnar surface and trapezoid on its radial surface, and abuts the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trapezium (bone)
The trapezium bone (greater multangular bone) is a carpal bone in the hand. It forms the radial border of the carpal tunnel. Structure The trapezium is distinguished by a deep groove on its anterior surface. It is situated at the radial side of the carpus, between the scaphoid and the first metacarpal bone (the metacarpal bone of the thumb). It is homologous with the first distal carpal of reptiles and amphibians. Surfaces The trapezium is an irregular-shaped carpal bone found within the hand. The trapezium is found within the distal row of carpal bones, and is directly adjacent to the metacarpal bone of the thumb. On its ulnar surface are found the trapezoid and scaphoid bones. The '' superior surface'' is directed upward and medialward; medially it is smooth, and articulates with the scaphoid; laterally it is rough and continuous with the lateral surface. The '' inferior surface'' is oval, concave from side to side, convex from before backward, so as to form a saddle-shaped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Index Finger
The index finger (also referred to as forefinger, first finger, second finger, pointer finger, trigger finger, digitus secundus, digitus II, and many other terms) is the second digit of a human hand. It is located between the thumb and the middle finger. It is usually the most dextrous and sensitive digit of the hand, though not the longest. It is shorter than the middle finger, and may be shorter or longer than the ring finger (see digit ratio). Anatomy "Index finger" literally means "pointing finger", from the same Latin source as '' indicate;'' its anatomical names are "index finger" and "second digit". The index finger has three phalanges. It does not contain any muscles, but is controlled by muscles in the hand by attachments of tendons to the bones. Uses A lone index finger held vertically is often used to represent the number 1 (but finger counting differs across cultures), or when held up or moved side to side (finger-wagging), it can be an admonitory gesture. Wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neurons
A neuron, neurone, or nerve cell is an electrically excitable cell that communicates with other cells via specialized connections called synapses. The neuron is the main component of nervous tissue in all animals except sponges and placozoa. Non-animals like plants and fungi do not have nerve cells. Neurons are typically classified into three types based on their function. Sensory neurons respond to stimuli such as touch, sound, or light that affect the cells of the sensory organs, and they send signals to the spinal cord or brain. Motor neurons receive signals from the brain and spinal cord to control everything from muscle contractions to glandular output. Interneurons connect neurons to other neurons within the same region of the brain or spinal cord. When multiple neurons are connected together, they form what is called a neural circuit. A typical neuron consists of a cell body (soma), dendrites, and a single axon. The soma is a compact structure, and the axon and dend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SRGAP2C
SLIT-ROBO Rho GTPase activating protein 2C is a protein in humans that is encoded by the SRGAP2C gene. Cortical development gene Slit-Robo Rho GTPase-activating protein 2 (SRGAP2) has been highly conserved over mammalian evolution, and human is the only lineage wherein gene duplications have occurred (three times). The promoter and first nine exons of SRGAP2 duplicated from 1q23.1 ( SRGAP2A) to 1q21.1 ( SRGAP2B) ∼3.4 million years ago (mya). Two larger duplications later copied SRGAP2B to chromosome 1p12 (SRGAP2C) and to proximal 1q21.1 ( SRGAP2D) ∼2.4 and ∼1 mya, respectively. Ancestral SRGAP2A and the derived SRGAP2C copy are fixed at diploid copy number two. In contrast, the SRGAP2B and SRGAP2D are highly copy number polymorphic, with normal individuals identified that completely lack these paralogscopies. SRGAP2C is the most likely duplicate to encode a functional protein and is among the most fixed human-specific duplicate genes. Incomplete duplication created a novel gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SRGAP2
SLIT-ROBO Rho GTPase-activating protein 2 (srGAP2), also known as formin-binding protein 2 (FNBP2), is a mammalian protein that in humans is encoded by the ''SRGAP2'' gene. It is involved in neuronal migration and differentiation and plays a critical role in synaptic development, brain mass and number of cortical neurons. Downregulation of srGAP2 inhibits cell–cell repulsion and enhances cell–cell contact duration. SRGAP2 dimerizes through its F-BAR domain. SRGAP2C, a shortened version found in early hominins and humans that only has the F-BAR domain, antagonizes its action. It slows maturation of some neurons and increases neuronal spine density. Evolution ''SRGAP2'' is one of 23 genes that are known to be duplicated in humans but not other primates. ''SRGAP2'' has been duplicated three times in the human genome in the past 3.4 million years: one duplication 3.4 million years ago (mya) called SRGAP2B, followed by two that copied SRGAP2B 2.4 mya into SRGAP2C and ~1 mya in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bradshaw Foundation
The Gwion Gwion rock paintings, Gwion figures, Kiro Kiro or Kujon (previously known as the Bradshaw rock paintings, Bradshaw rock art, Bradshaw figures and the Bradshaws) are one of the two major regional traditions of rock art found in the north-west Kimberley region of Western Australia.McNiven, Ian and Russell, Lynette ''Appropriated Pasts: Indigenous Peoples and the Colonial Culture of Archaeology'' Rowman Altamira 2005 p. 147 The identity of the artists and the age of the art are contended within archaeology and amongst Australian rock art researchers. A 2020 study estimates that most of the anthropomorphic figures were created 12,000 years ago, based on analysis of painted-over wasps' nests. These aspects have been debated since the works were seen, and recorded, in 1891 by pastoralist Joseph Bradshaw, after whom they were named until recent decades. As the Kimberley is home to many traditional owners, the rock art is referred to and known by many different names in the lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science (journal)
''Science'', also widely referred to as ''Science Magazine'', is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is over 400,000 people. ''Science'' is based in Washington, D.C., United States, with a second office in Cambridge, UK. Contents The major focus of the journal is publishing important original scientific research and research reviews, but ''Science'' also publishes science-related news, opinions on science policy and other matters of interest to scientists and others who are concerned with the wide implications of science and technology. Unlike most scientific journals, which focus on a specific field, ''Science'' and its rival ''Nature (journal), Nature'' c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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