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Summary of the evolution apes to man essay
Australopithecus afarensis essay
Mammalian .primate evolution history
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Australopithecus afarensis (Lucy)
Lucy was discovered in East Africa in the 1970s, but she lived about 3.5 million years ago, this means that she is the oldest bipedal ape ever found. She did not look or act like humans do but he skeleton started to show some similar traits. Her thigh bones slanted inwards like humans’ to support her as she stands, her pelvis was no longer flat like a chimp’s but it was cupped like ours to hold her guts while she stood upright. Her mouth had also started to show human traits, including losing huge canine teeth. That said, Lucy is still very different from humans because she has a brain and body about the size of a chimp’s and she has long arms for climbing trees
Kenyanthropus platyops (Flat-face)
Flat-face
...“Sexing fossils: a boy named Lucy?,” a peer-reviewed article by James Shreeve, and the article “Lucy’s kind takes humanlike turn” address subjects including sexual dimorphism, sex-based behaviors, and speciation of Australopithecines. While the two articles differ in the research and findings presented, they share a main, significant conclusion about Australopithecines, which is the sexual dimorphism in body size. Male A. afarensis are evidently larger than females, although there is some disagreement as to how much larger (the degree of sexual dimorphism).
Lucy was bipedal and her brain was smaller than that of modern humans. Lucy resembled an ape and was able to make tools to find food and weapons.
With a 99.6% genetic similarity to Chimpanzees , the physical appearance of Bonobos is very similar to them. The length of the legs, in proportion to the arms, Bonobo’s dark faces, pink lips, and more slender stature are just some of the cosmetic differences between them and Chimpanzees. Bonobos are notorious for their bipedalism, walking upright. Granted Chimpanzees can preform bipedalism when needed, but do not match the ease and grace of the Bonobo. With their habitat staying more constant, sense the forma...
On November 24, 1974, an American Anthropologist by the name of Donald Johanson and his research team, made a ground-breaking discovery that caused a mass dispute in human evolution. Dr. Johanson documented in his book, Lucy The Beginning Of Mankind, the discoveries he and his team have come across. Dr. Johanson and his team discovered a skeleton of a hominid, dated between 3.9 to 3 million years old (164). The hominid, which they referred to as Lucy, was discovered while surveying Hadar, in the Dafar region of Ethiopia (164-166). Lucy’s discovery, a 41% complete human ancestor caused a controversial alteration in the human origins. Lucy was the oldest human ancestor. During the following year, Johanson’s team discovered fossilized remains
Ever since the Pleistocene era, human societies have expanded rapidly, developing innovative ways to defend their territories and migrate across the land. Consisting of an aggregate of humans living together, these societies became more powerful as time progressed by consuming more meat (megafauna). Supporting this development, the more mammals that humans would eat, the more protein their bodies would absorb. When humans consume high amounts of protein, they develop stronger muscles, which leads to the stimulation of brain activity. By way of further explanation, amino acids from the proteins are used to make the neurotransmitters that allow your brain cells to network and communicate. Amino acids that come from the protein you eat are the building blocks of your brain’s network. They can excite or calm your brain as well as nourish your brain throughout its lifetime. Also, they allow the body's own proteins to be used to support life, particularly those found in muscle. This led humans to develop intelligence and create a wide variety of tools. These tools are what the early hominids used to develop their culture into that of hunter-gatherer-fishers, making humans a more dominant mammal within that ecosystem.
There is evidence to suggest that Homo neanderthalensis and Homo sapiens had coexisted for approximately 35-40,000 years, (Fagan 2010) from around 60,000 years ago to 25,000 years ago when they finally went extinct (Gibbon 2001). Anthropologists are still uncertain what the cause of their extinction was. This paper will analyze three main theories of Neanderthal extinction. The first theory is the competition theory, which claims that the Homo sapiens and Neanderthals had to compete for resources, ultimately leading to their demise. The second theory I will discuss is the climate change theory, which claims that Homo sapiens lived while Neanderthals died because they were better adapted to the climate. The last theory I will discuss is the possible “extinction through absorption” theory which claims the Neanderthal interbred with the Homo sapiens and became one species. In this paper I will also be comparing the technologies, and diets of both species. In addition, I will look at the anatomic relation between the Neanderthals and Homo sapiens, how their body shape and size differed, and if this gave any advantage to one side or the other. My thesis for this paper will state that Homo sapiens and Homo neanderthalensis had co-existed but the disappearance of the Neanderthal in Eurasia is due to the appearance of the more culturally advanced and genetically superior Homo sapiens and the failure of the Neanderthal to adapt in an evolving climate.
A. afarensis is classified as an ape, not a human. It is a Hominid, which is an ape closely related to human beings. The first fossils of a skeleton were found at Hadar; a site in northeastern Ethiopia. The team named the skeleton “Lucy” after the Beatles song, “Lucy in the Sky With Diamonds.” In terms of overall body size, brain size and skull shape, "Lucy" resembles a chimpanzee. However, A. afarensis has some surprisingly human characteristics. For example, the way the hip joint and pelvis articulate indicates that "Lucy" walked upright like a human, not like a chimp. This means that upright posture and bi-pedalism preceded the development of what we would recognize as human beings and human intelligence.
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.
Were Neanderthals the same as modern humans, or were they an entirely different species? This is a major topic of debate among Anthropologists, and many people strongly argue each view, backing their opinion with evidence from physical remains and inferred ideas about behavior.
Australopithecus is a group of extinct creatures related to human beings because they have a combination of human and ape-like traits, like humans they were bipedal, but like apes they had small brains; their canine teeth were small like humans but cheek teeth were large.
Primates are considered to be one of the most interesting mammals on earth to study due to their numerous similarities with humans and their complexities in life. Today we look at primates as our closest relatives, meaning that observations and research will not only give us information about non-human primates, but human primates as well. There were many primates to choose from, though I decided to observe two types of primates, the Western Lowland Gorilla, and the Tufted Capuchin Monkey. Both species of primates were observed at the San Diego Zoo. With my research, I will collect data from my observations, give background information from credible sources, and explain the interactions I encountered while observing the two different primates. Before attempting to understand ourselves and other species as primates, it is important to understand that scientific research is the basis for determining our origins as primates, understanding certain species of primates, and why we consider primates to be our closest ancestor.
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...
The early bird species, Archaeopteryx, was declared to be the first bird to exist when it was discovered in 1860 in Germany by Hermann von Meyer (Zhou, 2010). According to Zhou (2014), the Archaeopteryx lived around the late Jurassic period and had similar features to the Therapods. They shared the same tooth jaw, long tail bone, and feathers. The Archaeopteryx was an icon for the evolution of pre-historic birds to modern birds. Their similarly feathered wing structure compared to today's birds led paleontologist to believed the Archaeopteryx could fly like modern birds (Xu, 2012). The science community accepted Archaeopteryx as the first prehistoric bird, but later discoveries of other bird-like dinosaurs have put the Archaeopteryx's reputation
Second, the lower jaw and their articulations with the skull were of the human type, not like those found in apes. The teeth, however, were more like those of chimpanzees, but the face was short and not as prognathous as expected in primates of this
According to Britannica Encyclopædia, Australopithecus anamensis lived in Kenya between 4.2 million and 3.9 million years ago. A. afarensis lived in eastern Africa between 3 and 4 million years ago. This australopithecine had a brain size a little larger than chimpanzees. Some had canine teeth more sticking out than those of later hominines. No tools of any kind have been found with A. afarensis fossils.