显示标签为“prehistoric”的博文。显示所有博文
显示标签为“prehistoric”的博文。显示所有博文

2011年4月8日星期五

Prehistoric human brain found in pickled bog

One of the world's best preserved prehistoric human brain was found recently in a wet u.k. pit. The brain was an iron age man hanged and then beheaded, with his head covered in the mine has shortly thereafter. Scientists believe that immersion in liquid, anoxic environments helps to conserve human brain tissue.

A human skull with a "extremely persist" human brain still in it about 2684 years dated was recently in a wet u.k. pit, Journal of archaeological science discovered a new study.

The brain is the oldest known intact human brain from Europe and Asia, the authors, who also believe that it is one of the best preserved old minds in the world.

"The early Iron Age skull probably 1930s belonged to a man, in his," said lead author Sonia O'Connor discovery messages. "Cause of death is rarely possible to determine in archaeological remains, but in this case a hanging is damage to the neck."

"The head then carefully was cut off from the neck with a small blade, such as a knife," added O'Connor, post doctoral research associate at the University of Bradford. "This has been used to cut through the throat and between the vertebrae, leaving behind a cluster of finely cut marks on the bones."

The brain-containing skull was found at Heslington, Yorkshire, in the United Kingdom. O'Connor and her team suspect the site served a ceremonial function, that persisted from the bronze age through the Roman period. Many pits on the site were marked with individual stakes. The remains of the man were without a body, but a red deer, which was deposited on a channel found the scientists also the headless body.

Laser imaging, chemical analysis and other research showed that the brain naturally maintained over the millennia. The scientists found no evidence for bacterial or fungal activity, and described the website as "Odorless…with of a flexible, tofu-like texture."

The condition of the brain is notable for his age.

"In the air, even in the chill of a mortuary hospital, brain tissue decays very fast fluid before muscle and other soft tissue much evidence of decay," said O'Connor.

You and your colleagues suggest, that a random number of Ereignissen--for the brain and science, not the victims-resulted in the preservation of the organ. Shortly after the man was killed, has his head placed, or were dropped in the wet pit, which was free of oxygen. While other soft human body parts not well under such conditions can, keep seems the wet environment for keep "fresh," brains "due to the very different chemistry of brain tissue," completely, O'Connor said.

The researchers do not believe that the violent way, the man was killed, his brain supports conservation. While severing it his head from the rest of his body, separated including the bacteria-filled gut would decapitation "also a gaping wound produced have openly rot would have been involved in immediate infection of micro-organisms." That prevented the rapid burial in conditions not suitable for microbial activity, done.

The journal paper provides in addition to describe the brain discovered unusually well preserved, the first in-depth study of other prehistoric human brain and soft human tissues by scientists. They include the body of 5,000-year-old Tyrolean "ice man" the Inca mummies of the high Andes, which bog tanned bodies of Northern and Western Europe, good condition are sealed in a lead S?rgen--such as the St. bees man and crypt burials at places like Spitalfields Church, London, where body with survivors of brain tissue were found.

Glen Doran, Chair of the Anthropology Department at the Florida State University, told discovery news that two aspects of the new study suggested it as "remarkable".

"First", he said, "is such conservation the amazing conservation in wet sites." "Truly amazing things come from the muck."

""The second, he added,"is absolutely stellar analysis carried out on this special search."

Based on this discovery and other prehistoric known intact human brains, he agrees that rapid burial in an aqueous environment, as well as close to permanent flooding, essential for the human brain tissues are conservation.

"The cranium is structured in a way that the brain in life and can protect under the right circumstances, remain in service long after the normal expectation service," he said.


View the original article here

2011年4月2日星期六

Greek myths may have inspired prehistoric fossil

The femur of a large, extinct species was originally collected by the Greeks. It was 40 years ago rediscovered, but never went to the permanent exhibition. The fossil, which may have inspired certain animals in Greek mythology, now has a permanent home in England.

The bones of a large extinct creature, once guarded by the Greeks, has finally found a permanent home in England.

Known as the Nichoria bone, is the southern Greece the blackened fossil part of femur from a huge prehistoric mammal, perhaps a million years ago roamed. The bone was collected by Greeks and can even certain animals in classical Greek mythology helped inspire. It was rediscovered 40 years ago.

Since then, the fossil from the eyes of the public had largely disappeared.

"It was until 1998 lost." After my studies, the fossil was found stored in a basement at the University of Minnesota. It then ten years in various U.S. Labs spent, "said Adrienne Mayor research scholar in classics and history of science at Stanford University, Discovery News."

The historical fossil was of the curators at the Ashmolean Museum in Oxford, England welcomes.

"These venerable bones earned appear." It is one of only two large vertebrate fossils, which were dug out and intentionally collected in ancient times by archaeologists in Greece, ", said Mayor."

Large fossil remains of prehistoric species, such as this fossilised femur, would have been the inspiration for many legendary beasts of classical mythology, according to Mayor, who described 2000 book "The first fossil hunters" the fossil for the first time in her.

The roots of several myths detection, showed the book, its revised edition of this month was published that prehistoric fossils in the very places available was in the myths about giant beings.

"Probably found the ancient Greeks the bones in the brown coal deposits of the basin megalopolis, known in antiquity as the battle of the Giants." "It, the dense concentration of large fossil bones inspired the belief that all armies were blown up flashes of giant of Zeus," Mayor told Discovery News.

Perhaps worshiped as the femur of a mythical giant, the Nichoria discovered bones of the ancient Acropolis in Nichoria between 1969 and 1975 by archaeologists of the Minnesota Messenia expedition.

The fact that it carefully on the Acropolis, the 35 km of the brown coal deposits booth where the bone was probably found, shows that a great interest in fossils had the ancient Greeks stored.

"The bone provides further confirmation, that the ancient Greeks already found such examples and special importance attributed to,", said Hans-Dieter sues, principal scientist and curator of vertebrate paleontology at the Smithsonian National Museum of natural history in Washington, D.C., discovery messages.

In 1978 as the femur "Pliocene elephants" identified, the bone was lost for two decades. Rediscovered in 1998 in the Archaeometry laboratory of the University of Minnesota Duluth, it remained recognized uncatalogued Mayor of its importance.

She took the fossil at the American Museum of natural history in New York, where it by paleontologist Nikos Solounias, expert on Greek fossils from the Miocene to Holocene was examined eras.

Solounias the bone as the distal end of femur identifies a woolly rhinoceros, or possibly a Chalicotherium, a large herbivores, and dated to the Pleistocene Epoch (2 million to 10,000 years ago).

According to Solounias shows the rusty black color of the fossil bone, that it most likely of the brown coal deposits in the vicinity of the ancient city of megalopolis collected. Worn by the Greeks on the sunny Acropolis Nichoria, and then two millennia later dug up the bones traveled much in the last ten years.

From Greece East went on the Mediterranean Sea and Atlantic Ocean, it to Minnesota, then Princeton, New Jersey and New York City by paleontologists are identified. Then West again in Bozeman, Montana, where it professionally, was stabilized by restorers in the Museum of the Rockies to prevent further breach.

"It was then transported over land, Palo Alto, California, where it rested on my desk as I home sought for a proper in a leading Museum," said Mayor.

This spring, the relic went back across the Atlantic, from California to its final home at the Ashmolean Museum in Oxford, where it appears in the Greek and Roman Antiquities Gallery.


View the original article here