Human foot 40 000 years old, Can Write A New History

OLD FOOT IN THE NEW WORLD: 40.000 years of human foot in Mexico are made of volcanic ash could destabilize a long-standing theories about human migration into North America from head to toe. (Liverpool John Moores University - Bournemouth University)

British scientists believe that in central Mexico is estimated to human footprints 40,000 years old. This discovery was made to challenge previous research that says the first human arrival in the United States approached the 13.500 years ago.

This discovery made in 2003 by Professor Mathew Bennett, of Bournemouth University and Dr. Silvia Gonzalez, from Liverpool John Moores University. These footprints are found in the ancient mining area near the mountains of Cerro Toluquilla Valsequillo valley, located near Puebla, south of Mexico City.

According to Drs. Gonzalez, is in the form of fossil footprints in volcanic ash on the coast of an ancient volcanic lake.

Dr. Gonzalez believes that the changes in weather and the eruption of Cerro Toluquilla cause altitude volcanic lake levels are higher and decline, and shows a layer of volcanic ash Xalnene. Dr. Gonzalez said the footprints of this occurred when water levels rise and cause it to be sekaras betonan. These footprints were found at the time mine workers move about three yards of lake sediment that settles on top of a layer of volcanic ash where the footprints were located.

Using laser technology, a group of scientists to analyze and estimate the footprints sekitas age 40,000 years ago. The invention has been challenged by previous findings about the idea of ​​America's first inhabitants.

Previously, the scientific community believe that the first humans arrived in North America after the last ice age around 13.500 years ago.

It is believed that humans crossed the land bridge that existed from Asia into what is now Alaska and eventually occupied the entire continent.

This theory is supported by the discovery of stone tools called Clovis. This equipment was estimated to be 13.500 years ago.

Professor David Huddart, of Moores university, and this discovery kolabolator said: "The discovery of human footprints 40.000-year-old in Mexico is a model of human presence 'Clovis First' is no longer acceptable as the first evidence of human presence in America."

Dr. Gonzalez said that this discovery supports the theory that the first colonists may come through the water, using the waters of Pacific migration routes, rather than on foot and in groups the group came to America at different times. (erabaru.or.id)