In the Article “Redrawing Humanity’s Family Tree” by John Noble Wilford, describes how two different skulls challenge the theories of human origins and migrations. The Central African skull, that dates back to nearly 7 million years ago, was assigned to a whole new genus and species because of its apelike and evolved hominid species. The 1.75-million-year-old Georgian skull shows evidence that the first hominids may have been intercontinental travelers who set motion the migrations that occupied the whole planet. Finally a third skull was found that is the same age and shares a resemblance but, the size of the skull suggests that the brain was smaller than expected for H. erectus.
Discoveries relating to the human lineage are extremely exciting and often baffling. This is the case with the recent discovery of what seems to be the oldest member of the human family. A skull found in northern Chad in 2001, has been deemed the earliest relative to the human ever found. Nicknamed Toumai, and discovered by Michel Brunet and his paleontology team, this new category of human has been given the scientific name, Sahelanthropus tchaensis. What makes this skull so definitive is the fact that it dates back approximately 6-7 million years in the earth’s history (Whitfield 2002). Since the discovery there have been anthropologists and paleontologists that have
This article shows how Paleoanthropologist David Lordkipanidze and his group of archeologist discovered a 1.8 million-year-old skull fossil that could lead to knowing more about the earliest known ancestors of humans that ventured outside of Africa. Lordkipanidze’s excavation in the Georgia site known as Dmanisi. With this archeology find, it has been concluded that all early fossil humans belong to the same species known as Homo erectus. The article explains that the Dmanisi hominins had brains less than half the size of a modern human’s, and are key to understand the evolution and expansion these ancestors experienced from Africa to Eurasia. Genetic studies indicate that their expansion began from Africa about 1.9 million years ago. The article also mentions that with these new findings there can be a better ground from where to start to understand these ancestors as how they lived and socialized. Lordkipanidze does mention that the Dmanisi “were very primitive, we think there were social groups that connected with each other and learned from each other”.
“How old is the oldest human fossil?,” If you had said about 700,000 years, you would probably have been right until just recently that is, “The September 1998 issue of Discover magazine”, reports that Ernesto Abbate, a geology professor from Florence, Italy, has just discovered the fossilized skull and teeth of a humanlike creature who might have lived, as far back as, one million years ago. Calling this creature Buia Man after the city in northeastern Africa where the remains were found. Prof. Abbate thinks he has discovered the earliest fossil that displays physical features associated with Homo sapiens, the species to which modern humans belong. Moreover, Buia Man says, Prof. Abbate also shows physical
One of the most astonishing things on earth is the human body. They consist of many organs that work together to maintain the person alive. The humans body composition is complex, but what was the origin? How did we become who we are today? These are the questions that intrigued me, and allowed me to understand how the human body evolved over the years. By the examination of our ancestors, and our body we will understand how we look today.
The Article Ancestors was published in August 2001 it was published by Archaeological Institute of America and was intended for anthropologists. This article informs readers that two new fossils where found in Kenya, which gives us evidence that we did not evolve from a single ancestor. This gives us new insight not only on how species evolve but more importantly where we came from. The author put pictures in the article to show the fossils and a map to show where they were found. The pictures give readers visual evidence on how the species are related to us and that we evolved from more than one species. The author also goes into detail about the skull and skeleton parts that where found. Stating where they were found, how old they are, and
The living human population is 0.0105% the size of the initial total population and 0.001% of the current population, the corpse population is 110.1324% the size of the initial total population and 99.983% of the current population, and the zombie population is 0.0078% the size of the total initial population and 0.007% of the current population.
Scientists have been able to discover things about our past that are almost inconceivable over 150 years ago when Charles Darwin was releasing his book, “The Origin of Species” (Gibbons, 2009a). Fossils from different australopith species have been found that lived between 4 million and 2 million years ago that show the clearer transition to human. The author, Kate Wong (2013) believes the Australopithecus sediba is the most important human ancestor discovered. Even though the discovery of Au. sediba allowed anthropologists to see human species a long time ago, there are opinions on whether it was the most important human ancestor discovered. This essay will explore how hominids have gone through many changes to get from Ardipithecus to Homo habilis and the important discoveries by scientists and what I think is the most important to the study of human origins.
Through the fossil record, scientists have been able to observe the changes among different homo genus, as they evolved over time becoming what we now know as the modern human (Fossil Record, 2015). The fossil record not only organizes the sequential generations that have changed over time to adapt better to their environments, but it also provides a time line to how homo sapiens came to exist (Fossil Record, 2015). Through careful analysis of the human fossil record, characteristics in the skull such as the brow ridge, brain size, cranial capacity, dentition, nasal cavity, eye sockets, mandible, and the cranial base are all characterizes, that both connect the three specimens Homo erectus, Neanderthals, and modern human, as well as, set them apart.
In this article “A New Kind of Ancestor: Ardipithecus Unveiled”, Ann Gibbon explains the discovery of an international Scientific’s team. This finding is the oldest known human ancestor skeleton and it has 4.4 million years. The Ardipithecus ramidus is the most complete earliest hominin found until now because it has the pelvis, hands, feets and most of the skull and teeth, it is bipedal and its features show a new early hominin, but is still being similar to other species.
--Even though fossilization is quite unusual for many species including hominids archaeologists have assembled enough evidence to paint a fairly accurate picture not only of our ancestors, but the ancestors of species of humans who
In an attempt to find a correct phylogenetic tree, our group has found that Phylogenetic tree C shows a significant lineage. After researching, Phylogenetic Tree C seems to be an accurate depiction of hominid evolution. It shows a clear line of lineage that begins with the common ancestor A. Afarensis. To explain how the hominids connected in the lineage, our group decided to compare the skulls’ cranium width and length of braincase. We concluded that over millions of years, the width of the cranium of the hominids have increased, along with the length of braincases. Our explanation matched up with tree C respectively. The order of the width of craniums recorded are: A. Afarensis (80 mm), A. Boisei (80 mm), A. Africanus (85 mm), H. Habilis (98 mm), H. Erectus (108 mm), H. Heidelbergensis (122 mm), H. Neanderthalensis (128 mm), and H. Sapien
Genetic evidence sheds considerable light on the origins of the hominid lineage. An increasing body of fossil data helps us to understand where and when hominids came into existence. The first signs of hominid evolution are the morphological changes associated with bipedality, a locomotor pattern that offered fitness, advantages in a new environment. However, other behaviors remained similar to those of nonhuman primates. Dramatic progress came with the evolution of Homo erectus, who exhibited more "human" morphology and life ways. Thus, behavioral, fossil and artifact data couple to give us a glimpse into our evolutionary past.
Human evolution according to research started over 6 million years ago. The outcome of the evolution process is the current human beings. Scientific studies have revealed over the years a remarkable affinity between the chimpanzees/Apes and human beings. Even though this reality is not a definitive prove that human beings evolved from apes, it does show that the human beings are in one way or another related to other primates. Scientists suppose that the humans and the primates shared a common ancestor. The subject of what makes humans what they are and their origin has been the exclusive purpose leading to many scientific studies globally (Coolidge & Wynn, 2011). Studies believe that Africa was the origin of evolution millions of years ago. Fossil remains have been discovered in different parts of Africa as well as other regions of the world. Different hominins have been discovered around the world in the last 1 million years. Thus, the different discoveries have led to comparisons between the various species of hominins to clarify on their similarities as well as differences. This essay seeks to explain whether they were distinctively different species or regional versions of the same species.