When a person is asked how humans differ from apes, bipedalism would probably be the last thing that a modern human would think of. Bipedalism seems so ordinary when people live in a world of technology that has seen the inventions of cars, planes, and computers. When Albert Einstein is mentioned, very few would agree that his theory of relativity is second place to the feat of walking upright on two legs. Yet, if the first Hominids had not taken those first steps, humanity might not have evolved into the modern societies that currently exist. Although there may never be absolute evidence of why Hominids took those first crucial steps, evidence does suggest that human evolution went through many changes in order to make bipedalism the efficient way to travel.
Bipedalism is the defining human characteristic that separates man from his early ape ancestors. Before the first Hominid stood upright and walked on two legs, his ape cousin traveled around on all four appendages that kept their hands busy from other constructive pursuits, such as making tools. It is not that there are no apes that can walk on two legs, but as Jennifer Ackerman put it, "Two-legged walking in a chimp is an occasional, transitory behavior." Chimpanzees and bonobos have been observed to walk on two legs for short periods of time, even using tools, however their anatomy doesn't permit extended bipedalism like a human. The first Hominids first began to walk upright only 6 or 7 million years ago, and had not used bipedalism as the main mode of travel until 3.2 million years ago when Australopithecus afarensis first appeared. And ever since then man is has been the only primate to use bipedalism exclusively.
Many early researchers reasoned that bigger brains ca...
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...hat human ancestors could have ever done.
Works Cited
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Wayman, Erin. "Becoming Human: The Evolution of Walking Upright." Smithsonian, August 6, 2012. http://www.smithsonianmag.com/science-nature/becoming-human- the-evolution-of-walking-upright-13837658/?no-ist
Bipedalism (our ability to walk on two legs), the uncommon size of our brains, symbolic language, and the ability to farm/hunt is what makes us different from the past era. (Christian 6-7) Pages 1-22 begins the era of foragers, also known as the “Paleolithic era” where they use stick and stone tools to survive across different climates around the globe. The era of foragers is the longest (250,000 years) and the hardest era to integrate evidence because of the time gap. Christian stated, “Historians have had a hard time integrating the era of foragers into their accounts of the past because most historians lack the research skills needed to study an area that generated no written evidence (2).
After millions of years that humans separated from their relative primate how is that humans became bipedal. So many changes have happened to the human body to decide to stay on the ground and abandoned their lives in the trees. Primates evolved different body structures according to their lifestyle and the ecosystem in which they lived. As Charles Darwin natural selection stays; it could be as a result of new environments, the need for food and shelter, which forced humans to adapt and survive. Although, most of primates’ anatomy reflects habits of movement, it could be easy to see the external differences but there are many differences that have been intensely studied and researched.
When talking about evolution, it is not stating that man comes from monkey but rather that man evolves and adapts to his surroundings and environment due to natural selection. In the days of the cavemen, men were hunting while women were caretakers and cooks. Because men were hunters, they became bigger, faster, and stronger in order to have better skills for hunting which was essential for survival. These men passed down these “dominated traits – some flexibility, an instinctive ability to respo...
Bipedalism is a form of locomotion that is on two feet and is the one factor that separates humans from other forms of hominoids. The first bipeds are believed to have lived in Africa between 5 and 8 million years ago. (Haviland et al. 2011, pg. 78). The evolution to bipedalism resulted in various anatomical changes. To be able to balance on two legs, the skull must be centered over the spinal column. As bipeds evolved, the foramen magnum, the opening at the base of skull for the spinal column, moved from the back of the skull to the center. The spinal column also evolved from a continuous curve to a spine with four concave and convex curves. (Haviland et al. 2011, pgs. 79, 80). Another change was the widening of the pelvis which gives a wider plateau for more balance when walking on two legs.
Humans know or understand the theory of evolution and how they evolved from apes, but there is always talk of a missing link between apes and modern humans. Apes did not just suddenly evolve into modern day humans. Apes evolved into another species that fall into the relation of modern humans. This is what the missing link is referring to; we call the species hominins. Hominins comprised of many species actually, including but not limited to, Australopithecus afarensis and Homo erectus. Homo erectus may have been a direct descendant of modern Homo sapiens. These species hold strong evidence that they are the missing link between apes and modern humans. There are many pieces of evidence that lay the path of evolution from these species to modern humans, “…these include anatomy, living primate behavior, and genetic relationships” (Stanford, 237). Australopithecus afarensis comes first, existing about 3.9 to 2.9 million years ago, with intermediate anatomical traits between living apes and modern humans; their fossils were found in Africa (Yukimoto). About a million to two million years later, the species Homo erectus came into existence and lots of evidence has been found about this particular species, in fact, it was probable that it was the first species to leave Africa (Yukimoto). These species are significant in the evolution of modern humans. We do not have a clear path or even understand why these species emerged when they did or how they, in theory, eventually evolved into modern humans. We can only assume these things, by using various evolutionary processes such as natural selection, genetic bottleneck, and many more.
Primates are characterized by their unique characteristics, behaviors, and features. This is also why humans are considered to be a primate. With the human evolution researchers are able to find these common similarities. And even though chimpanzees have a very close body type and size they also have some differences. Researchers have found all these results by studying non-primates many different way in the non-primate own environment. With these results and studies it proves the facts that humans are indeed primates.
By being able to walk further distances, brought them to a diverse new diet and that enables their brains to get bigger. Bipedal animals usually walk greater distances because less energy is needed with their longer strides. The stones stools show evidence of abstract thinking and it shows the early hominins adapting and using their environment to survive which is a skill that we as modern humans have surpassed. Based on the pictures that were displayed in class, the stone stools had a purpose and it was made with a certain style that they had to have some sort of procedure behind it which show signs of culture. There were some stools that had no purpose, these stools were created just for aesthetics because it did not benefit them in anyways. There was also a burial picture that was shown in class. The picture was very interesting because it showed that these early hominins believe in some sort of after life or the importance of preserving the dead which is shocking and sort of unbelievable that they thought of burial so early in human
Apes, like humans, are catarrhines and part of the superfamily hominoidea. Apes started to appear in the Miocene about 20 million years ago(lecture notes, week 10), under this category there are many primates that are distinguished as apes, such as, orangutans, gibbons, chimpanzees, and gorillas. These particular primates are from the old world and are native to Africa and Asia. Apes can be distinguished by the foramen magnum towards the back of the skull, having no tail, and having a hook nose (Larsen 2013, p. 150). Another characteristic of apes is that they have large brains for their body size, this is important because it shows they have a higher intelligence than other animals, and this can be connected to the relationship shared with humans.
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 first group of primates was the Ardipithecus group. They were the earliest humans closely related to other primates. The Ardipithecus group evolved in Africa and took the first step upright on two feet. Sahelanthropus tchadensis was the first human species to ever walk the earth. They were the building block of more complex species to come. There were many species that started the human race such as the Orrorin tugenensis. This species was nicknamed the Millenium Man and live 5.8-6.2 million years a...
What evidence shows the changing from the early hominids to the modern humans? Throughout the human evolution body parts like legs and harms have changed for the better. By the early hominids being biped, meaning they are able to stand and even walk on two feet, it helped them to be able to do more things like getting around more and help with their tool making and hunting. A lot of the fossils discovered were found in the Great Rift Valley in East Africa, which contained many different lakes and small rivers. For many years researchers have been finding new species. These species have been named Australopithicus, robust australopithecines , Orrorin tugenensis, Homo habilis, Homo erectus, neanderthal, and Homo sapiens. These early hominids and modern humans really show off how the features and behaviors have really changed in time.
The evolution of humans was (and is) a very important time. The first being of evolution was Australopithecus Afarensis or “Lucy”. Then we moved on to Homo erectus and Homo Neanderthal. When the weather got hotter, we were Homo Sapiens Sapiens and finally, the modern man. This evolution did not happen overnight. It took millions of years. The past is hardly forgotten, but the imminent is next.
1.9 million years ago, Homo Habilis of East Africa had evolved into an entirely new species known as Homo erectus. Homo erectus directly translates to "Upright man" and for good reason. One of largest anatomical advancements of Homo erectus was their arm and leg bones which were very similar in shape and proportions to that of modern day humans. "Their legs would have made Homo erectus efficient long distance runners like modern humans."(Dennis). Along with their longer more developed legs, Homo erectus's leg were also hairless which allowed them to evaporate sweat and thus be more efficient at not overheating. This advantage allowed Homo erectus to chase down four legged mammals to the point of heat exhaustion and thus drastically increase the efficiency their hunting tactics. Another change in the legs of Homo erectus was their slightly more narrow pelvises. This forced the size of a child’s head to be smaller at birth and undergo most of its development during childhood. (Dennis)
The members of the Homo genus possess a combination of unique features that distinguish them from other related species. At the time that each respective species was alive, they were able to walk upright on two legs, use their large brains for the benefit of their species, and could thrive in many geographically and climatically diverse areas of the world. One of the most mysterious quandaries in science is how the lineage of the Homo genus became so different from their primate relatives. Bipedalism, brain size, and location diversity all have a common link that may explain this difference – dietary evolution allowed humans to adapt to their surroundings, and in turn, become a more advanced species. The Homo diet evolved in relation to food availability and nutritional necessity. With the ability to maintain a proper diet, the species of the Homo genus were able to flourish and advance toward the development of modern Homo sapiens.
One of the most important and pivotal physical and biological adaptations that separate humans from other mammals is habitual bipedalism. According to Darwin, as restated by Daniel Lieberman, “It was bipedalism rather than big brains, language, or tool use that first set th...