Multi-Regional Continuity: The Fossil Evidence
With regards to the multi-regional continuity model of human evolution, there is without a doubt a preponderance of fossil data that supports the diverse origins of Homo sapiens in different regions of the globe. Skulls displaying a wide variety of mixed modern and archaic features have been found in every corner of the world. The mere existence of these fossils is evidence enough to prove that human evolution was far less cut-and-dried a process than the advocates of the replacement model of human evolution would like to suggest, and, in fact, rather astonishingly complex.
It is useful before discussing the individual fossil specimens to to preface with what exactly is meant by the terms “modern'; and “archaic'; in reference to skull morphology. “Modern'; features in skull morphology as the word is used here include thin cranial walls, small supraorbital ridges, small teeth, small eye sockets, broad, flat foreheads, large cranial volume (above 1200 cc.), low prognathism in the area of the lower face, and a high, vaulted shape in the area of the cranium. “Archaic'; features in skull morphology include thick cranial walls, heavy supraorbital ridges, large teeth, large eye sockets, sloping foreheads, low cranial volume (below 1200 cc.), high prognathism in the area of the lower face, and a small, football-shaped cranium. The presence of various mixtures of these modern and archaic traits forms the basis for identifying a fossil as transitional modern/archaic in accordance with the multi-regional continuity model of human evolution.
As an example of transitional fossils found outside of Africa and in accordance with the multi-regional model of human evolution, the remains found in the Ngangdong beds of the Solo River in Indonesia are an excellent beginning. Dating from roughly 250,000 years ago, the skulls of the thirteen individual recovered lack faces, but the crania are markedly archaic, football-shaped and flattened in general contour (Poirier 1987: 222). Other archaic features include heavy supraorbital ridges and thick cranial walls (222). Their archaic features put the Solo remains in the classification of Homo erectus, but the skulls display at least one distinctive modern tra...
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...he replacement modelers might argue, the examples given for the multi-regional model are isolated freaks. This claim, too, however, is easily disproved by examples of transitionals from outside Africa for which large fossil sample populations exist, as in the case of the Solo River and Arago Cave examples detailed earlier. What becomes clear in the process of examining the many-and-varied fossil examples of transitions between modern and archaic features is that human evolution was more of a tangled, convoluted web than it is the neatly pruned tree that many textbooks are so fond of depicting in illustration. Not all of those specimens detailed here could be the ancestors of modern humans...their odd mixture of features is testament enough to that. But that human evolution was an unfocused, even chaotic process seems less-and-less an overstatement, the more evidence is reviewed. The definition of what are commonly referred to as “modern'; and “archaic'; features may be the results finally of no more than luck of the evolutionary draw, as it were.
Works Cited
Poirier, Frank E.
1987 Understanding Human Evolution. Englewood Cliffs, New Jersey, Prentice-Hall, Inc.
Chinese and Malaysian Homo Sapiens have very close features to the Neanderthal. The skull analysis of Neanderthals and Homo sapiens are usually considered more accurate if the entire skull is examined, rather than certain ...
The evolution of man is constantly in question. While we are reasonably sure that modern humans and primates are both related to the same common ancestor, there is constant debate over what initially caused the two species to split into early hominids and apes. According to some, our longest and most popular theory on the division of man and ape is profoundly wrong. However, those same individuals usually offer an equally controversial theory as a substitute, one that is almost impossible to scientifically test or prove. Both the Savanna Theory and the Aquatic Ape Theory offer solutions to how and why humans evolved into bipedal toolmakers. But with enough questioning, each loses its accountability to rhetorical science.
The human archaeological record is a long and undefined story that may be the most complex question researched today. One of the big questions in human history is the disappearance of the Neanderthal people from the archaeological record around 30,000 BP. While for thousands of years Neanderthals and Anatomically modern humans crossed paths and perhaps lived in close relations, we have yet to really understand the degree to which they lived together. My hypothesis is that these two hominids, Neanderthals and Anatomically Modern Humans, interbred exchanging genes after Modern Humans dispersed from Africa and creating like cultures and material remains. The differences between Neanderthal and Modern humans are not only physical but also genetically evolved and this research will determine an estimated amount of admixture between the two groups.
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As archeological discoveries of bone fragments and fossils continue to support the existence of homo-sapiens
Rheumatoid arthritis is a chronic inflammatory and an autoimmune disease that occurs when the immune system mistakenly attacks the body’s tissue (Rheumatoid arthritis, 2017). This disease affects the entire body, which is called a systemic (means entire body) disease. Arthritis is derived from the word part arthr-, which means “joint,” and -itis, which means “inflammation,” so altogether it means “inflammation of the joints.” It creates inflammation that causes the tissue that lines the inside of joints (synovium) to thicken. About 1.5 million people in the U.S. are affected. It affects all races, but it affects three times as many women than men (What is Rheumatoid Arthritis, n.d.). Overtime, rheumatoid arthritis causes painful swelling that can potentially result in bone erosion or joint deformity, which leads up to physical disabilities. RA can affect more than just your joints, but can spread to body systems, skin, eyes, lungs, heart, blood vessels, e.t.c (Rheumatoid arthritis, 2017).
The species A. afarensis is one of the better known australopithecines, with regards to the number of samples attributed to the species. From speculations about their close relatives, the gorilla and chimpanzee, A. afarensis’ probable social structure can be presumed. The species was named by Johanson and Taieb in 1973. This discovery of a skeleton lead to a heated debate over the validity of the species. The species eventually was accepted by most researchers as a new species of australopithecine and a likely candidate for a human ancestor.
The world is filled with many ambitious people looking to make a product to help the world and make a living for themselves and their families. These people are known as entrepreneurs. An entrepreneur is someone who organizes and operates a business or businesses while running the risk of losing everything to make money. One might ask why there is a risk ...
Arthritis is a general term for approximately 100 diseases that produce either INFLAMMATION of connective tissues, particularly in joints, or noninflammatory degeneration of these tissues. The word means "joint inflammation," but because other structures are also affected, the diseases are often called connective tissue diseases. The terms rheumatism and rheumatic diseases are also used. Besides conditions so named, the diseases include gout, lupus erythematosus, ankylosing spondylitis, degenerative joint disease, and many others, among them the more recently identified LYME DISEASE.
Rheumatoid arthritis is a disease that has direct involvement with the immune system. This disease is considered to be degenerative and currently the only thing that can be done is manage the painful symptoms and suppress the self targeting actions by using immune suppressing drugs. The cause of rheumatoid arthritis is mostly unknown but there is a high amount of evidence that there are genetic predispositions for the disease. This being said however there are also environmental factors to asses these include, bacteria, viruses, fungi and other environmental factors. Doctors primarily use a physical examination to first suspect R.A. then send for blood work to confirm. There are many aspects to this disease and many questions left unanswered, the treatments available now are only temporarily and can in some cases cause more problems than benefits. Lab experiments and clinical trials are currently showing some great results and could within our lifetimes cure many autoimmune diseases including R.A..
Paleoanthropology: Pliocene and Pleistocene Human Evolution. Paleobiology, 7:3:298-305. Frayer, David W. and Milford Walpoff 1985 Sexual Dimorphism. Annual Review of Anthropology, 14:429-473 Key, Catherine A. 2000 The Evolution of Human Life History.
“Rheumatoid arthritis (RA) is an autoimmune disease in which your body’s immune system – which protects your health by attacking foreign substances like bacteria and viruses – mistakenly attacks your joints. The abnormal immune response causes inflammation that can damage joints and organs, such as the heart. Early diagnosis and prompt treatment is the key to preventing joint destruction and organ damage.”(Rheumatoid Arthritis). This is the definition I found but when most people read this they think it is too complex and hard to understand. So, I began asking questions like is it hereditary, are the medicines she will take be harmful, and can it be prevented? So my big question is, is this disease going to limit my grandmother from doing her normal activities and will she still be able to have a...
“The scientific study of how humans developed did not begin until the 1800s in Europe. Until that time, people relied on religious explanations of how humans came into existence. Starting in the 1500s a scientific revolution began to sweep Europe. Thinkers started using scientific methods and experiments to try to better understand the world and the creatures living in it. Eventually these methods were turned to the question of human origins” (The Nature Of Human Origins, 1). Earth made it possible for species to change over time because Ancient Earth provides ability to plenty of time.The Homo Sapien a is very complex creature. The species started off very simple by living in caves and surviving with little food and then later evolved into a species that were able to do many more complex things. The first species was Sahelanthropus tchadensis They were one of the most simple humans in that time period and on. They had very small skulls compared to Homo Sapiens today and their motor skills were just the same. We have evolved and changed for the better both mentally and physically. The Evolution of Homo Sapiens started off simple, such as the Neanderthals, and now we are the most advanced species to ever walk the planet so far.
It is necessary to look at the development of artificial intelligence in order to put this idea into context. The concept of intelligent and aware constructs began to emerge in the 1950s and 60s as several scientists in many fields came together to discuss the possibilities of advanced computer research. The first major step was a scientific conference at Dartmouth College in 1956. Here, the general concepts and possible paths of research for a.i. were fleshed out. As described in Artificial Intelligence: A Modern Approach, this conference was “the birth of artificial intelligence.” This was mostly a theoretical stage yet attending experts predicted that with a huge investment, working technology could be available in a generation (16). After being officially established, a.i. research and discovery exploded. Computer programs, a brand new idea, were already conquering algebra problems and speech recognition. Some could even reproduce English (18). It was clear that artificial intelligence research was going to be at the fo...
Arthritis occurs when the body incorrectly identifies its own tissue as foreign matter and attacks it. Arthritis includes a set of more than eighty autoimmune diseases. Arthritis attacks connective tissues and joints. It causes stiffness, pain, inflammation, and swelling of the joints. Some kinds are crippling, but rarely leads to death. There are many different kinds of arthritis, the main ones being Osteoarthritis and Rheumatoid arthritis; others include gout and ankylosing spodylitis.