A Paper On The Genus Hominins Essay

The first Neanderthal remains, discovered in Germany in 1856, were presented to the world of science at a meeting of the Lower Rhine Medical and Natural History Society held in Bonn in February 1857 and named a species, Homo neanderthalensis, by William King in 1864. Some Neanderthal fossils and other remains are in excellent condition, giving a good idea of Neanderthal culture. In 1887, two complete skeletons were found in a cave near Spy in Belgium, and more from sites in France in 1887, 1908 and 1911. These and other finds showed that the Neanderthals had populated Europe widely from about 130,000 to 28,000 years ago after which they became extinct. Most of these fossils were found in caves. Usually they are associated with cold

Homo erectus was first found in Africa and the fossilized remains dated 1.8 and 1.0 million years old. The Homo erectus traits are very similar toward the modern human traits. Homo erectus brain size was smaller than the Homo sapiens. Homo erectus had a brain size of approximately 650 cc and Homo sapiens had a brain size of approximately 1251

For many years there has been a debate over where modern humans originated from. The first theory, out of Africa, discusses modern humans evolving in Africa. They migrated out to Eurasia and as the time went on their species evolved independently and developed into distinct species. All other human populations were eventually replaced with no interbreeding involved in the process and Homo sapiens had successfully dominated the rest of the world. On the other hand, the second theory, regional continuity, says that our earliest hominid ancestors had departed Africa and spread into other parts of the world later evolving into modern human beings. In this paper I will discuss the Regional continuity theory and elaborating on the Out of Africa theory. Evidence based on fossils, artifacts, and other crucial components will be discussed. Based on the evidence found I will come to a conclusion as to which theory I think best fits the origins of humans.

The most recent ancestor to the modern human, Homo neanderthalensis existed between 300,000 and 35,000 years ago. Originating in Africa, ancestors of the early Neanderthals migrated northwards almost 800,000 years ago. These migrants colonized much of the Old World with the majority based in Europe and small groups scattered throughout the Middle East and Asia. Historically, the Neanderthals were among the most resiliant creatures to exist on Earth. As a population, they thrived during the European ice age 40,000 years ago. This ice age enveloped the majority of Northern and Central Europe and due to their physique were the Neanderthals were able to surive. Physcially, the Neanderthals were larger and more muscular than today’s human

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.

Evolution is the process of change of living organisms over a long period of time due to difference of environment or circumstances that was not prevalent before. These evolutionary mutations occur due to things such as a change of environment where what may have been shallow water has gradually gotten deeper and thus the organisms that inhabited that land had to change in order to remain living in that area without risk. This also relates to things such as storms that may alter the habitat of the previous land where what something may have eaten has changed and the organism was altered to match that environment. This then has an affect on the history of human evolution, humans and apes relate to a similar origin and were very similar many years ago and this is known as primate phylogeny. This Extended research task will go in depth with the origins of man and the relation between man and apes through primate

Darwin once hypothesized that humans evolved from an ape like ancestor and that those ancestors most likely originated in Africa since the majority of the great apes lived there. Unfortunately, Darwin’s hypothesis was ignored for reasons such as people (e.g. Europeans) not liking of having African ancestors—not to mention the lack of evidence did not help in supporting such hypothesis. Thus, finding the missing link between apes and humans was of great important—it still is. Thankfully, through extensive research many scientists have been able to determine a clade called Hominin [7]. This clade contains humans as well as their most closely related relatives.

The evidence shown refers to the fact that they were both part of the same Australopithecus ancestors. However based on brain size to body weight and the shape of muzzle angle and skull shape both share distinct similarities to man and whether only one or both were direct ancestors is still a moot topic. Based on evidence collected Homo erectus shares more similarities to Homo sapiens then that of Homo ergaster (sharing the same dimensioning of the Nasal Opening, cheek Bone, the Post orbital constriction (for exact dimensions refer to table above)) The brain sizes are also remarkably similar the Homo erectus having a brain capacity 69% of Homo sapiens. Based on this evidence it is concluded that Homo erectus is placed as an earlier ancestor evolved from that of Homo ergaster, despite the two living in very similar time periods.

     The proponents of the separate species hypothesis believe that they had a common ancestor, but Neanderthals and modern humans were separate species. They argue that the Neanderthal line was a dead end, and that for some reason Homo sapiens thrived while they went extinct.

Blastocystis hominis (B hominis) is a common parasitic organism found throughout the world. An infection with B hominis is called blastocystosis. The parasite lives in your large intestine and can be found in stool. It can remain in the body for weeks, months, or years. It is not known whether the parasite B hominis causes any symptoms in humans or if the associated symptoms may be caused by infection with other parasitic organisms, bacteria, or viruses. Often, B hominis is found along with other organisms that are more likely to be the cause of your symptoms.

Homo heidelbergensis was an early human species that lived around 700,000 to 200,000 years ago. These pioneers were the first to live in colder climates, hunt large animals with wooden spears, and utilize fire. They were also our first ancestors to construct simple shelters out of wood and rock. Interestingly a comparison between Neanderthal and modern human DNA suggests the two lineages diverged from a common ancestor, most likely Homo heidelbergensis!

       In the article, "Natural History of Homo erectus" by Susan C. Antón discussed our view of H. erectus is different today than when Pithecanthropus erectus, then only the second fossil hominin taxon to be discovered, was described by Dubois (1894) (Antón, C. Susan, 162). H. erectus was the most primitive and smallest-brained of the fossil hominins (Antón, C. Susan, 162). Therefore, early observations expended significant effort showing that the Indonesian fossils from Trinil were actually hominins (Antón, C. Susan, 162). Thus, it took the dismissal of Piltdown and the broad acceptance of Australopithecus as a hominin ancestor, along with the substantial Asian

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

Hominids with a brain absolutely and relatively larger than that of the australopithecines appeared about 2.3 million years ago. These hominids are classified in our own genus: Homo. The earliest species to appear was the Homo Habilis. It was the first of our ancestors to show a significant increase in brain size and also the first to be found associated with stone tools. These characteristics resulted in this species’ placement into the human genus, Homo.

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.