Discovery of the Sahelanthropus Tchadensis Fossil: Earliest Hominid
In July of 2001, a group of archeologists discovered the skull and jaw bone of the oldest member of the human family. The skull is a new discovery and was found in the Djurab Desert of Northern Chad by a group of archeologists lead by Michel Brunet, and is thought to be six to seven million years old (Walton). The age of the skull and jaw bone were approximated through the association of the fauna that were found with the fossils (Brunet). The skull is a major find for archeologists because they now have a new piece of the puzzle that shows the evolution of humans from apes and it provides information to a period that scientists had very little knowledge about because of the lack of evidence (Whitfield).
The skull was given the scientific name: Sahelanthropus tchadensis and was nicknamed Toumai, which is a local name for a child born perilously close to the beginning of the dry season meaning “Hope of Life” (Walton). The skull has a mix of ape and hominid, early humans who are distinctly different from apes by their upright posture, features. The brain case is similar to those of apes, being about the size as a chimp, but the thick tooth enamel and the presence of small canines in the jaw bone are features that are similar to hominids. The most surprising part of the skull is the presence of the large brow ridges found on Toumai (Groves). This is unexpected because the next oldest hominid fossils have a small or non-existent brow ridges but our family, Homo, also has large prominent brow ridges (Gee).
These fossils are having a major impact on the scientific world’s view of human evolution and scientists may even have to rethink some present ideas about it. Because the skull of Toumai has characteristics that are very similar to those found in the Homo family, some scientists are beginning to question whether or not Australopithecus, an early member of the hominid family from about four to one million years ago and they are characterized by their fully upright posture and their small brain size, is even part of the evolution record of humans from apes. Bernard Wood, of George Washington University in Washington DC, argues that if Australopithecus has more ape-like features than the features found on an older
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 ...
...s much of the time that some people have been led to believe. This belief had begun when they had discovered a fossil that has since been given the title “Selam”. “Selam” is the skull of a three year old female Australopithecus Afarensis who is believed to have been alive about 3.3 million years ago, having been discovered in the year 2000 in Ethiopia, Dikika by a paleoanthropologist named Dr. Zeresenay Alemseged. With Selam they have found that with the skeleton of her, that it shares many similarities when compared to the bone structure of an ape, meaning that the A. Afarensis may have lived a somewhat arboreal lifestyle. They at first checked the shoulder blades of “Selam”, with both remaining in fully intact which is considered to be very rare due the fact that the shoulder blades had remained intact through 3.3 million years, as it would allow them to find out
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
Australopithecus afarensis who existed 3.5 million years ago and a 4.4 million year old skeleton of an Ardipithecus ramidus are the closest science has come to discovering the human lineage. Shattered Ancestry an article written by Katherine Harmon discusses the remains of two hominids found within Ethiopia. These skeletal remains have created a huge controversy within the topic of evolution questioning many assumptions that have been made referencing the human lineage. The skeleton of the Australopithecus afarensis was named Lucy and was discovered in 1974. The evidence of her walking upright on her two feet essentially guaranteed her a spot in the human lineage line. Lucy was a chimplike ape that was said to walk upright making scientists believe the human ancestry was simple. The complete skeleton found in Ethiopia of an Ardipithecus ramidus named Ardi completely changed all assumptions made from scientists about the complexity of the human lineage. These remains have encouraged researches that the human line is not the only lineage to have evolved but the chimpanzee line has undergone drastic changes as well. There are many traits that researchers have always directly linked to the human lineage however since these discoveries occurred researchers are reconsidering. The recent discoveries that have shattered what has always suggested what linked a species to the human lineage have changed the certainty of whether it is possible to confidently identify the human’s last common ancestor. Majority of scientist had forgotten that there would have been many hominid species living together at one time. New theories have been suggested since scientists revealed that the foot of a hominid found called the Burtele site was found ju...
As archeological discoveries of bone fragments and fossils continue to support the existence of homo-sapiens
In the United States, modern car manufacturing has been historically dominated by the American companies including Ford Motor Co., Chrysler Group LLC, and General Motors Co. These three companies, known as the Detroit Three, controlled 95% of the market in the 1950’s and the dominance continued until the beginning of the 21st century. In the 1980’s Japanese auto manufacturers entered the United States, a decade later the Germans, and finally in 2000’s the Koreans. By the end of 2009, the Detroit Three only accounted for 45% of the total U.S. auto market. Another factor that had influence on this was constant fluctuations in gasoline prices and price sensitive consumers. According to the U.S. Department of Energy, gas prices hit record high averaging $3.07 per gallon in May 2007 and kept climbing up to $4.08 in July 2008. As gas prices kept increasing, consumer buying trends have been changing. In 2006 sales for SUVs, pickup trucks, and vans dropped 16%, while the market for compact cars rose by 3%. Unfortunately, the Detroit Three were not prepared for this since their...
I am a husband and a father of four lovely children. We need a large vehicle to haul all of us around town. And of course I would do anything to keep them safe and I always want to provide them with the best. Therefore, after the birth of our fourth child two and a half years ago, my wife and I decided to upgrade our Ford Explorer to a Ford Expedition. We got everything from the side-curtain airbags to the TV and DVD player. What we did not know was we also purchased a rather large unleaded gas bill. The first time we filled the tank it cost us roughly $35; today it costs us right around $75 to fill the tank. Obviously the price of gas has increased significantly in the last two years. The price increase is due to a fluctuation in the supply and demand of not only gasoline but also crude oil, which is needed to manufacture gasoline. In addition, several other factors are influencing a change in the price of gasoline.
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.
Since the early 1990s, the car market has become saturated with sport utility vehicles. While SUV’s have been enthusiastically received by a wide spectrum of the demographic – everyone from teenagers to soccer moms -- not all are excited by its arrival. Some of the current complaints with SUVs have to do with their ridiculous size and relative fuel inefficiency. Others criticize the vehicles as being unsafe, and certainly unnecessary, for the tasks for which they are commonly used. But even with the recent campaigns to educate the public on the possible physical and environmental risks posed by the automobiles, SUV purchases continue to be on the rise. Indeed, with car sales on the decline, and the SUV being seen as a possible savior -- or at least band-aid -- for the struggling motor industry, any movement to ban SUVs in the near future is unlikely.
Mark Twain lived a life full of hardships with trials and failures. However, he gained knowledge from those defeats. Furthermore, in both passage A and passage B there are similarities and differences that are significant. In passage A it states,” What is interesting is the power so remarkable should have been packed into the frame of a child born in Missouri…” However, later in the passage it states,”... marke was studying Tom Sawyer, Huck Finn, and the Mississippi river.” Therefore, he learned from the books and developed a similar style. He was not born with the talent, but his knowledge progressed with time. Additionally, in passage B it states,” His boys’ masterpieces,’ Tom Sawyer’ and ‘Huckleberry finn’, withheld from youths by Brooklyn
The Neanderthals are an extinct species of human that lived in ice age Europe between 120,000-35,000 years ago. This species is known for their receding forehead and prominent brow ridges. We know this species as the uncivilized or unintelligent person or group. Neanderthals are often portrayed as “unintelligent cavemen in animal-skin clothing.” Scientists’ first thought the Neanderthals’ were subhuman, but that thought is beginning to change. The original name given to the Neanderthals when they were first discovered was ‘Homo Neanderthalensis’ and they were considered to be an ancestor to modern humans. “Forty-four years after this biased classification, Neanderthals were reclassified as a human subspecies Homo sapiens Neanderthalensis and
how much gas is sold is how efficient the particular automobile uses gas and what
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.
Increased gas prices created a shift in demand, resulting in increased interest in the more economical hybrid vehicles (Colander, 2006).
Automobiles and its related manufacturing contribute to the degradation of the environment causing great concerns from consumers, governments, policy makers and environmentalists, regarding the economy and global warming. This resulted in market changes, due to new environmental laws, legislations, standards, product requirements and consumer wants. The gasoline engine produces emissions that are deadly for the environment, hence the big race by the automobile producers to develop an efficient alternative fuel/energy for powering its vehicles. Deloite (2014) ‘In 2012, new Corporate Average Fuel Economy (CAFE) standards were released in the U.S. that requires automakers to raise the average fuel efficiency of new cars and trucks to 54.5 MPG by 2025.’ (“Global Automotive Consumer Study”, 2014, p.4) The industry is engaged in research and development to develop more efficient internal combustion engines, electric vehicles (EVs), plug-in hybrids, and vehicles powered by natural gas. The government offers incentives in the form of rebates for the purchase and sale of energy efficient