1. LIFE, EXPANSION AND REASON FOR EXTINCTION. 2. WHERE DID THEY LIVE? 3. DIFFERENCE BETWEE THEM AND HOMO SAPIENS. 4. BREAF DESPRIPTION OF SOCIAL BEHAVIOUR. 5. OPINION OF EXTINCTION. Andrea León and Paula Santos 1ºA First of all, where did we come from? Some people think that Adam and Eva were the first man and woman. The story of Adam and Eva is central to the belief that God created human beings to live in a Paradise on earth. However, other ones think that we come from ape ancestors. 1. LIFE The first human beings used to live in small groups called nomadic tribes. Hunt, fish and recollect wild plants for food. Live in caves or outdoors. 2. WHERE DID THEY LIVE? Most archaeologists think that Homo sapiens sapiens first lived in Africa, and that our direct ancestor was Homo habilis , who evolved about 2.5 million years ago. But some believe our ancestor was Homo ergaster, who developed around 1.9 million years ago and settled in different parts of the world. EVOLUTION 1. Ardipithecus ramidus was the first hominid on Earth and lived in Africa. The pelvis show us that they could combine tree-climbing and bidepal activity. 2. Homo habilis were the first hominids that started using instruments made of stones. 3. Homo erectus; this type of homidid appeared later and were the firts hominids able to spread out and to achieve Asia. AFTER THEM, THE NEARDENTALENSIS APPEARED AND LATER ON, THE ACTUAL HOMO SAPIENS. 3 DIFFERENCES BETWEEN THEM: NEARDENTHALENSIS Their body was large and short, due to this characteristics they could bear easily bad weather. They used to live 40 years. Their brain capacity was similar to our capacity, and their face was large and long, their dentition was large too and they had a very big nose. They used to hung animals and recollect fruit. Their type of hunting was really dangerous because they had to be nearby the pray. Due to this their life expectative was really law and they used to have lot of injuries. HOMO SAPIENS Their characteristics are like nowadays. They had less brain capacity than homo neardenthalensis. They hunted smaller prays than homo neardenthalensis used to hunt. Homo sapiens is the binomial nomenclature for the human species. Homo is the human genus, which also includes Neanderthals and many other extinct species of hominid; H. sapiens is the only surviving species of the genus Homo. Modern humans are the subspecies Homo sapiens sapiens, which differentiates them from what has been argued to be their direct ancestor. Modern man (homo sapiens) and neanderthal man (homo neanderthalensis) are closely related. They both belong to the genus homo, and the time periods in which the two species lived overlap. Neanderthals lived between 500,000 (ish) and 30,000 years ago, and modern humans first showed up around 200,000 years ago (modern in appearance, though not necessarily in behavior). DNA evidence even supports the idea that members of the two species inter-bred successfully! There are, however, differences: neanderthal humans had a more pronounced nose, and a slightly larger cranium (brain compartment) than modern humans. Both species made and used tools, however neanderthal tools were much more primitive. It is suggested that neanderthals were better adapted for a colder climate, which may have led to the eventual supremacy of modern humans as the planet warmed. 1. EXPANSION Over 160,000 years ago, the first humans lived in Africa. They stayed there for a long time because of the climate conditions. Then they started to spread out to hunt for food and they achieve south and north Africa. A group travelled across the Sahara, reaching Asia, but they didn’t stay there for a long time because they died. The climate conditions were not the same as in Africa so they weren’t able to survive. After that, homo erectus reoccupied Asia and some years later, the Neanderthal Man reached India, and continued along Indonesia. A worlwide population extinctions started due to Mt Toba super eruption. Later, they were able to move north up. And finally, they occupied north and south america. EXTINCTION The main reason of extinction was the maladaptation because of climate conditions. Some of them couldn’t bear living in such cold places. Another reason was the Mt Toba eruption. The volcanic eruption that resulted in Lake Toba is known to have been by far the biggest eruption of the last 2 million years. In our story the Toba eruption is the most dramaticevent before the last ice age. Toba is also regarded by some as having caused worldwide population extinctions as a result of the ‘nuclear winter’ that followe SOCIAL BEHAVIOUR A general model is outlined showing how the prehistoric development of clothing for thermal reasons may be relevant to the emergence of modern human behaviour. A distinction is drawn between simple and complex clothing, with the latter leading to repercussions that can ultimately became decoupled from thermal contingencies. Archaeological correlates of complex clothing can be linked to attributes of modern human behaviour, some but not all of which made a transient appearance in late Pleistocene Tasmania. Cave sites in the southwest of the island have yielded bone tools and distinctive stone scraper tools, along with evidence for the targeting of prey species and parietal artworks in some caves. Thermal conditions in late Pleistocene Tasmania approached the known limits of human cold tolerance, necessitating the use of clothing. The archaeological record is reviewed in relation to likely technological and other correlates of the manufacture of clothing. It is argued that thermal parameters were a significant aspect of the human response to climate change in Tasmania. These developments invite comparison with those witnessed outside the region during the Upper and late Middle Pleistocene, particularly in northern middle latitudes and also in Africa, where they are interpreted as indicating the emergence of modern human behaviour. http://es.wikipedia.org/wiki/Homo_neanderthalensis https://ar.answers.yahoo.com/question/index?qid=20130415115402AAZQcuM+ http://humanorigins.si.edu/evidence/human-fossils/species/sahelanthropus-tchadensis http://www.answers.com/Q/What_is_the_difference_between_homo_sapien_and_n eanderthal http://haciendohistoriaenclase.blogspot.com.es/2012/05/los-primeros-sereshumanos.html ww.livescience.com/12937-10-mysteries-humans-evolution.html http://www.infoplease.com/dk/encyclopedia/first-modern-humans.html http://www.jstor.org/discover/10.2307/40387391?uid=2&uid=4&sid=2110482613131 7 http://www.independent.co.uk/news/science/first-humans-lived-at-southern-tip-ofafrica-397161.html http://humanorigins.si.edu/evidence/human-fossils/species/sahelanthropustchadensis