human origins natalia rosalía

12
HUMAN ORIGINS Natalia Ruiz BACH B Rosalía Segado

Upload: grupoanimoto

Post on 13-Jun-2015

154 views

Category:

Education


2 download

TRANSCRIPT

Page 1: Human origins natalia rosalía

HUMAN ORIGINS

Natalia Ruiz 1º BACH B

Rosalía Segado

Page 2: Human origins natalia rosalía

PRIMATE TO HOMINID

Hominids are a group of arboreal primates whose origins are in Africa, for at least seven million years.

Humans are hominids, but not all hominids are human beings, only belonging to the genus Homo.

Page 3: Human origins natalia rosalía

Characteristic of Hominids

They move in a vertical position

bipedal. Their palate is U-

shaped Their skull have

a large brain

Page 4: Human origins natalia rosalía

The first hominids

The appearance of the first hominids appear to coincide with a cooling and aridity that forced the withdrawal of tropical forests and their replacement by woody formations, rinsed and savannas.

Page 5: Human origins natalia rosalía

Main pre-human species

Ardipithecus ramidus, is the oldest hominid known better. It is 4’5 millions old.

Australopithecus anamensis, it has hominids characteristics such as bipedalism and thick tooth enamel, which allowed them to eat hard foods.

Australopithecus afarensis, their brain was slightly higher than that of chimpanzees. The pelvis and lower extremities and have human aspect, which means available to bipedal gait.

Later hominids A. afarensis, they presented the axis of the skull tour of a sagittal crest.

Page 6: Human origins natalia rosalía

The humanization: the first humans It is assumed that the first species of the genus homo

had a bigger brain and complex, with higher intellectual abilities. Its appearance coincided with climatic changes that caused a second phase of cooling and aridity in Africa why are our first ancestors who are no longer tied to a forest habitat and occupy open spaces in Savannah.

Page 7: Human origins natalia rosalía

HOMO HABILIS

It is the first homo remains have been found.

His skull was clearly higher than that of Australopithecus.

Its teeth were similar to humans.

It is assumed that homo habilis began to lose body hair.

Predominant in their diet hard foods of plant origin, were not meat eaters Systematic

Page 8: Human origins natalia rosalía

HOMO ERGASTER

His skull bigger and wider than that of Homo habilis had a well developed supraorbital arch and small teeth adapted to a diet based on meat and other animal fats soft foods.

The skeleton was very similar to modern humans.

His hand axes were worked in tears. In his yacimienos bones have been found with marks of stone tools. Meat-eaters were common.

Page 9: Human origins natalia rosalía

HOMO ERECTUS

This species arose 1 million years ago and disappeared about 100,000 years ago in Java 400000 years ago and used the fire, as evidenced by the straight ash found near his remains.

His skull was more elongated and thicker walls than that of modern humans. Presented a supraorbital rim and a very marked depression postorbital. His face was prominent, with massive jaws and chin lacked.

Page 10: Human origins natalia rosalía

HOMO ANTECESSOR

In addition to being hunter-gatherers, practiced cannibalism. Emerged in Africa. From there he emigrated, via Asia, to Europe and arrived in the Iberian Peninsula, where it evolved to give rise to Homo heidelbergensis.

Page 11: Human origins natalia rosalía

NEANDERTALES Y SAPIENS

El hombre neandertal: Appeared in Europe for over

300000 years ago and disappeared 28000.Had an average height of 1'65 and musculature more developed than any current athlete.Although his skull was a primitive, prints of his brain lobes indicate that carrying a modern brain.

Page 12: Human origins natalia rosalía

DISCUSSED THE ORIGIN OF MODERN HUMANS

It is considered that the antepasadoafricano rodhesiensis omo of our species. Appears in Africa 200,000 years ago, and is a modern human who still has archaic features. The modern Homo sapiens appears also in Africa about 160,000 years. While European Homo heidelbergensis gave rise to Neanderthals in Africa showed up <<us>>. In Europe appears H. sapiens during the last Ice Age, between 40000 and 35000 years.