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Tag: "fossil" at biology news

Did feathered dinosaurs exist?

...rent theory supports direct derivation, but recent fossil discoveries in China have led to new questions abo...les, the effects of decomposition on skin, and the fossil evidence relating to alleged feather progenitors (protofeathers). Richard Hinchliffe of the Universi...

Newly discovered birdlike dinosaur is oldest raptor ever found in South America

...he Agencia Cultura of Ro Negro Province loaned the fossil to The Field Museum. The holotype, or definitive, fossil of this adult dinosaur is in excellent condition: articulated and nearly complete. An additional par...

'Acid rain' and forest mass: Another perspective

... frontiers, happens because, due to the burning of fossil fuels, the amount of sulphur and nitrogen oxides in the atmosphere is greater than that derived from natural processes. These oxides, in the presence of water vapour and under the oxido-reduction conditions present in the atmosphere, produce acids ...

Ancient anthropoid origins discovered in Africa

The fossil teeth and jawbones of two new species of tiny monkey-like creatures that lived 37 million years ago have been sifted from ancient sediments in the Egyptian desert, researchers have reported. They said their findings firmly establish that the common...

Oil spills and climate change double the mortality rate of British seabirds

...sed by global climate change from man's burning of fossil fuels." ...

U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming

...ly would probably win." Now Baumiller is studying fossil crinoids, looking for telltale structures that will help him understand how and when sea lilies developed the ability to move around and shed their stalk ends. He also hopes to learn more about the roots of the relationship between crinoids and their...

Creeping crinoids! Sea lilies crawl to escape predators, new video shows

...ly would probably win." Now Baumiller is studying fossil crinoids, looking for telltale structures that will help him understand how and when sea lilies developed the ability to move around and shed their stalk ends. He also hopes to learn more about the roots of the relationship between crinoids and their...

Study Holds Promise For New Way To Fight HIV

...st surviving member of the megacerine (giant deer) fossil group and has changed considerably since its prehi...a. Dr Lister said: "The fact that DNA survives in fossil bone that is thousands of years old is an exciting bit of science in itself. Now we can analyse thes...

Extinct giant deer's descendant found in UK

...st surviving member of the megacerine (giant deer) fossil group and has changed considerably since its prehi...a. Dr Lister said: "The fact that DNA survives in fossil bone that is thousands of years old is an exciting bit of science in itself. Now we can analyse thes...

Study shows big game hunters, not climate change, killed off sloths

...f humans must have been the decisive factor." The fossil record shows the people who arrived in North America were making sophisticated tools out of stone, bone and ivory, Steadman said. These "big-game hunters" had a traumatic effect on the animals living there, he said. More than three-fourths of the la...

DNA traces evolution of extinct sabertooths and the American cheetah-like cat

...ogical pressures. In light of the new DNA data and fossil information from other studies, it appears likely that a puma-like ancestor that migrated to the New World may have given rise to Miracinonyx and ancestral Puma a few million years ago, around the time that the North American prairie is thought to ha...

Using the genomic shortcut to predict bacterial behavior

... study found that: # corn requires 29 percent more fossil energy than the fuel produced; # switch grass requires 45 percent more fossil energy than the fuel produced; and # wood biomass requires 57 percent more fossil energy than the fu...

Ethanol and biodiesel from crops not worth the energy

... study found that: # corn requires 29 percent more fossil energy than the fuel produced; # switch grass requires 45 percent more fossil energy than the fuel produced; and # wood biomass requires 57 percent more fossil energy than the fu...

Skull study sheds light on dinosaur diversity

...oliferation of wide gauge tracks everywhere in the fossil record at the end of the dinosaur era." Wilson wonders if the change in locomotion---from typical sauropod narrow-gauge walking to titanosaur wide-gauge walking---corresponded to lifestyle changes, such as different feeding habits. But without skulls...

High carbon dioxide levels spur Southern pines to grow more needles

...2 expected by 2050 due to human activities such as fossil fuel burning. Other stands are left as untreated controls for comparison. The elevated carbon dioxide is delivered from rings of towers in the open air setting of a Southern forest ecosystem. McCarthy found that, over the most recent six years of th...

“Hitchhiking?Viruses as Cancer Drug Delivery System

...den and Wrangham say that the evidence lies in the fossil record, specifically teeth and jaws. The teeth and jaws of savannah dwelling apes evolved into large massive jaws, jaw muscles and molars, ideal for grinding roots instead of shearing leaves. The size of the teeth and jaws reflect the apes' secondar...

The roots of civilization trace back to ... roots

...den and Wrangham say that the evidence lies in the fossil record, specifically teeth and jaws. The teeth and jaws of savannah dwelling apes evolved into large massive jaws, jaw muscles and molars, ideal for grinding roots instead of shearing leaves. The size of the teeth and jaws reflect the apes' secondar...

Study uncovers dirty little secret: Soil emissions are much-bigger-than-expected component of air pollution

Nitrogen oxides produced by huge fires and fossil fuel combustion are a major component of air pollu...s worldwide each year, with 64 percent coming from fossil fuel combustion, 14 percent from burning and a surprising 22 percent from soil, said Lyatt Jaeglé, a...

World-first technology enables study of ancient bacteria

...ce that contains more carbon than all conventional fossil fuels and, therefore, a potentially enormous energy source. However, we know little about gas hydrates as they melt during recovery due to the fall in pressure. Professor R. John Parkes, of the School of Earth, Ocean and Planetary Sciences at Cardif...

Proposal would allow wild animals to roam North America

...s to start, with each step carefully guided by the fossil record and the involvement of experts and research. "We are not advocating backing up a van and letting elephants and cheetahs out into the landscape," said Donlan. "All of this would be science driven." A pilot study will test the rewilding notion...

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