A lost world has been found in Antarctica, preserved just the way it was when it was frozen in time some 14 million years ago. The fossils of plants and animals high in the mountains is an extremely rare find in the continent, one that also gives a glimpse of a what could be there in a century or two as the planet warms. A team working in an ice-free region has discovered the trove of ancient life in what must have been the last traces of tundra on the interior of the southernmost continent before temperatures began to drop relentlessly.An abrupt and dramatic climate cooling of 8°C in 200,000 years forced the extinction of tundra plants and insects and brought interior Antarctica into a perpetualdeep-freeze from which it has never emerged, though may do again as a result of climate change.
An international team led by Prof David Marchant, at Boston University and Profs Allan Ashworth and Adam Lewis, at North Dakota State University, combined evidence from glaciers, from the preserved ecology, volcanic ashes and modelling to reveal the full extent of the big freeze in a part of Antarctica called the Dry Valleys. The new insight in the understanding of Antarctica"s climatic history, which saw it change from a climate like that of South Georgia to one similar to that seen today in Mars, is published in the Proceedings of the National Academy of Sciences. "We"ve documented the timing and the magnitude of a tremendous change in Antarctic climate," said Prof Marchant. "The fossil finds allow us to examine Antarcticaas it existed just prior to climate cooling at 13.9 million years ago. It is a unique window into the past. To study these deposits is akin to strolling across the Dry Valleys 14.1 million years ago." The discovery of lake deposits with perfectly preserved fossils of mosses, diatoms and minute crustacea called ostracods is particularly exciting, noted Prof Lewis. "They are the first to be found even though scientific expeditions have been visiting the Dry Valleys since their discovery during the first Scott expedition in 1902-1903," he said.
Jawbones from an early human ancestor, found recently in northeast Ethiopia, could shine light on a murky period of human evolution, paleontologists say. The bones were found in the fossil-rich Afar region, just 20 miles (32 kilometers) north of the spot where the famed skeleton of "Lucy"—early human ancestor who lived 3.2 million years ago—was unearthed in 1974. (What was Lucy?) The new bones are believed to date from 3.8 million to 3.5 million years ago. Though more research ...
Submitted by Waspie Dwarf: Protein extracted from 68 million-year-old T. rex bones has shed new light on the evolutionary link between dinosaurs and birds. Researchers compared organic molecules preserved in the T. rex fossils with those of living animals, and found they were similar to chicken protein. The discovery of protein in dinosaur bones is a surprise - organic material was not thought to survive this long. A US team of researchers have published the finding in Science journal. The team ...
Submitted by Pandora: A monkey-like animal seen as an ancestor of monkeys, apes and humans was not as brainy as expected, according to scientists who analyzed its nicely preserved 29-million-year-old skull. The finding indicated that primate brain enlargement evolved later than once thought, the researchers said on Monday.They analyzed a remarkably well-preserved fossilized skull of the little primate Aegyptopithecus zeuxis, which lived in the trees and ate fruit and leaves about 29 million year...
A baby mammoth unearthed in the permafrost of north-west Siberia could be the best preserved specimen of its type, scientists have said. The frozen carcass is to be sent to Japan for detailed study. The six-month-old female calf was discovered on the Yamal peninsula of Russia and is thought to have died 10,000 years ago. The animal's trunk and eyes are still intact and some of its fur remains on the body. Mammoths are an extinct member of the elephant family. Adults often possessed long...
Workers at a leisure facility found a fossil containing traces of dinosaur skin patterns, a rare discovery that could shed light on the actual appearance of the creature, the Fukui Prefectural Dinosaur Museum said Thursday. Museum officials said classifying the dinosaur has been difficult because fossils of its bones have not been found. But they said it could be a plant-eater from the early Cretaceous Period, about 100 million to 140 million years ago, judging from the age of the stratum where ...
There's a new extraterrestrial suspect in the mysterious, highly debated disappearance of the woolly mammoth some 12,900 years ago. A team of two dozen scientists say the culprit was likely a comet that exploded in the atmosphere above North America. The explosions sent a heat and shock wave across the continent, pelted the ground with a layer of telltale debris, ignited massive wildfires and triggered a major cooling of the climate, said nuclear analytic chemist Richard Firestone of Lawrenc...
The remains of a huge beaked dinosaur with the looks of an ostrich but the weight of a rhino have been discovered in China's Gobi desert, fossil hunters have announced. The previously unknown dinosaur weighed in around 1.5 tons (1.4 metric tons) and stood more than 16 feet (5 meters) tall—an extraordinary size given its birdlike appearance, say the Chinese researchers who found it. (See a photo gallery of the giant dinosaur. Gigantoraptor erlianensis, which lived some 70 million yea...
First appearing approximately 230 million years ago colossal creatures known as ‘dinosaurs’ ruled the earth. For millions of years, no other animal species legitimately threatened the existence of dinosaurs. Nonetheless, on one unlucky day, approximately 65 million years ago, the dinosaurs seemingly disappeared from the face of the earth or so the story goes…On occasion throughout history, there have been sightings from remote regions of the world of enormous creatures that resemble various dino...
Posted by nuke on Monday, July 30 @ 07:27:07 CDT (190 reads)--
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A lost world has been found in Antarctica, preserved just the way it was when it was frozen in time some 14 million years ago. The fossils of plants and animals high in the mountains is an extremely rare find in the continent, one that also gives a glimpse of a what could be there in a century or two as the planet warms. A team working in an ice-free region has discovered the trove of ancient life in what must have been the last traces of tundra on the interior of the southernmost continent before temperatures began to drop relentlessly.An abrupt and dramatic climate cooling of 8°C in 200,000 years forced the extinction of tundra plants and insects and brought interior Antarctica into a perpetualdeep-freeze from which it has never emerged, though may do again as a result of climate change. 
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