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Fossil "mother mine," writes the earth shaking impact of an asteroid: study


WASHINGTON (AFP) – Scientists in the US say they have found the fossilized remains of the mass of creatures that died minutes after a huge asteroid crashed into Earth 66 million years ago, sealed the fate of the dinosaurs.

The document, which will be published on Monday, a team of paleontologists, with headquarters in Kansas State University say they have found a "jackpot exquisitely preserved fossils of animals and fish" that is now North Dakota.

The impact of an asteroid that is now Mexico was the most catastrophic event ever known come upon the earth, the elimination of 75 percent of the species of animals and plants of the planet, extinguishing the dinosaurs and paving the way for lifting people.

Researchers believe that the impact goes fast moving seismic waves that caused the sudden mass flow of water and debris from the inner arm of the sea, known as the West inter & # 39; er Seaway.

At the site of Tanis in the formation of North Dakota Hell Creek, surge left a "tangled mass of freshwater fish, terrestrial vertebrates, trees, branches, logs, sea ammonite and other sea creatures," according to Robert DePalma, lead author of the report.

Some fish fossils have been found breathed "ejected" associated with the Chicxulub event, judging seismic shots reached North Dakota in the "tens of minutes," he said.

"Besieged happened so fast all preserved in three dimensions – they are not compressed," said co-author David Burnham.

"This is like an avalanche, which collapses almost like a liquid and then sets, as concrete. They were killed, quite unexpectedly because of the violence of the water. We have one fish, which crashed into a tree and was broken twice. "

Fossils in Tanis include what were considered to be more newly identified species of fish, as well as others who were "the best examples of its kind," said DePalma, a graduate student and supervisor Palm Beach Museum of Natural History in Florida.

"We are looking at the moment-by-moment recording of one of the most significant events in the history of Earth impact. No other site does not record exactly, "he said.

"And this particular event linked directly to all of us – every mammal on Earth, in fact, because it is, in fact, where we have inherited the planet Nothing was the same after this blow, he became a planet mammals, not .. . dinosaur planet. "

The article must be published in the Proceedings of the Academy of Natural Sciences.

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