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480 million-year-old fossil sheds light on 150-year-old paleontological mystery
01-09-2008 · EurekAlert!Discovery of an exceptional fossil specimen in southeastern Morocco that preserves evidence of the animal's soft tissues has solved a paleontological puzzle about the origins of an extinct group of bizarre slug-like animals with rows of mineralized armor plates on their backs, according to a paper in Nature.
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- 480-million-year-old fossil sheds light on 150-year-old paleontological mystery
01-09-2008 · EurekAlert!
Discovery of an exceptional fossil specimen in southeastern Morocco that preserves evidence of the animal's soft tissues has solved a paleontological puzzle about the origins of an extinct group of bizarre slug-like animals with rows of mineralized armor plates on their backs, according to a paper in Nature.
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- Coelacanth fossil sheds light on fin-to-limb evolution
08-01-2007 · EurekAlert!
A 400 million-year-old fossil of a coelacanth fin, the first finding of its kind, fills a shrinking evolutionary gap between fins and limbs. University of Chicago scientists describe the finding in a paper highlighted on the cover of the July/August 2007 issue of Evolution & Development.
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- Scientist's Persistence Sheds Light On Marine Science Riddle
09-29-2006 · ScienceDaily
When he started compiling an online database of seashells 15 years ago, Dr. Gary Rosenberg did not envision that his meticulous record-keeping would eventually shed light on a 40-year-old evolutionary debate.
The debate involves the mechanism underlying the island rule: that small animals isolated on islands evolve to be larger than their mainland relatives, and large animals evolve to be smaller.
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- Treasure trove of fossils found in Kendall County cave
04-12-2007 · EurekAlert!
UIC geologists discovered and excavated fossils from a cave in a Kendall County limestone quarry that has shed new light on living conditions in the area some 310 million years ago. The find includes a fossil of the oldest known conifer in North America.
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- Tears reveal some of their deepest secrets to researchers
01-19-2007 · EurekAlert!
It's no secret why we shed tears. But exactly what our tears are made of has remained a mystery to scientists. A new study sheds some light on the complex design of tears. What we think of as tears, scientists call tear film, which is made up of three distinct, microscopic layers.
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- Ancient retrovirus sheds light on modern pandemic
06-21-2007 · EurekAlert!
Human resistance to a retrovirus that infected chimpanzees and other nonhuman primates four million years ago ironically may be at least partially responsible for the susceptibility of humans to HIV infection today.
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- Greenland's ancient forests shed light on stability of ice sheet
07-05-2007 · EurekAlert!
Ice cores drilled from southern Greenland have revealed the first evidence of a surprisingly lush forest that existed in the region within the past million years. The findings from an international study published today in the journal Science suggest that the southern Greenland ice sheet may be much more stable against rising temperatures than previously thought.
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- Paleontologists discover most primitive primate skeleton
01-23-2007 · EurekAlert!
The earliest branches of primate evolution are more ancient by 10 million years than previous studies estimated, according to an article featured in the Proceedings of the National Academy of Sciences. Researchers reconstructed the base of the primate family tree by comparing skeletal and fossil specimens representing more than 85 modern and extinct species. The team also discovered two 56-million-year-old fossils, including the most primitive primate skeleton ever described.
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- Soft tissue taken from Tyrannosaurus rex fossil yields original protein
04-12-2007 · EurekAlert!
Dr. Mary Schweitzer, a North Carolina State University researcher, and colleagues at Harvard Medical School and Beth Israel Deaconess Medical Center have confirmed the existence of protein in soft tissue recovered from the bone of a 68 million-year-old T. rex. Their results may both change the way that people think about fossil preservation and present a new method for studying diseases such as cancer.
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- The world's oldest bacteria
08-27-2007 · EurekAlert!
A research team has for the first time ever discovered DNA from living bacteria that are more than half a million years old. Never before has traces of still living organisms that old been found. The exceptional discovery can lead to a better understanding of the ageing of cells and might even cast light on the question of life on Mars.
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