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Pre-history

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Pre-History

Anthropologists: Anthropologists study the skeletal remains of prehistoric life. Two examples of famous
anthropologists are Mary Leaky and Donald Johanson. Donald Johanson was the anthropologist who
discovered “Lucy”. “Lucy”is the first known sign of humanity. The technical name for “Lucy” is
Australopithecus. The odd thing about “Lucy” is that she was both modern and pre-historic, having arms
longer that her legs, and being bipedal was a strange combination for a creature said to be three million
years old. Anthropologists study all over the world, but “Lucy” was found in Africa.

Radiocarbon Dating: Radio Carbon dating is a dating method in which the amount of carbon14 in an
object is measured. The bodies carbons start to decay at death so they measure how old something is by
measuring it’s amount of carbon. There are two major problems with this method though. 1) The
specimen can only date back about 100,000 years. 2) If the original amount of carbon was distorted for
any reason that will mess up the date given. For those reasons scientists developed other methods that
help date things more accurately. These methods include the stardust theory and the river delta theory.
Ice Age: Glaciers; large, slowly moving masses of snow and ice. Each of the four cold weather periods
lasted from 10,000 to 50,000 years ago. The Ice Age. Scientists believe that the age we live in started
after the 4th period Ice Age sone25,000 years ago. Today 1/2 the earth is covered in ice. During the
third period 1/3 of the world was covered in ice. The ice age made animals either migrate or disappear
entirely. (Saber Tooth Tiger, Woolly Mammoth) It also shaped the continents we live on today. There
were also land bridges in the Ice age.

Paleolithic Age: Paleolithic means “old stone” we called it the stone age. 1974 Ethiopia Donald Johanson
a well known anthropologist discovered female skeletal remains that might have been as old as 3 million
years.

Cro-Magnon People: When neanders disappeared cro’s appeared in Europe. Better tools and weapons
were made, the 1st spear and paintings were made in this age.found in Spain and south France. Paintings
of animals (limestone) High foreheads, well developed chins, small brow ridges, by the end of the stone
age they no longer existed.

Neolithic Age: New stone age about 10,000 years ago. Learned how to use sandstone tools, wood
(wedges, saws,drills chisels, and needles) Earlier people were nomadic. Settlers tamed animals, raised
cattle, horses, sheep, and pigs. Seeds, fertilizer and plows were also a part of the Neolithic age. 9,000
years ago there was a Neolithic revolution where everyone settled.

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