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Fossil records # mode # 39; North Dakota The impact of asteroid on an earthquake: a survey



Scientists in US say they have found fossil remains a mass of creatures who died long after a major asteroid that had been hit into the Earth 66 million years ago, closing the dinosaurs.

In a newspaper published from Monday, a team of paleontologists from the University of Kansas say they find “a mother of fossilized fish and preserved fish” in it's place t North Dakota.

The result of the asteroid in Mexico is the biggest single threat to the Earth's flood, by eliminating 75% of all animal and plant species. planet, destroying the dinosaurs and creating a path for raising people.

Researchers believe the effect is abrupt, seismic, which caused a massive, water torrent and debris from an inland sea called Seaway Side. West.

At the site of Tanis in the creation of Hell Creek from North Dakota, the movement left “mass of freshwater fish, invertebrates, trees, branches, logs, marine ammonites and other sea creatures”, according to Robert. T DePalma, the main author of the report.

Some of the fish fossils were confirmed to have been aware of an “ejecta” associated with the Chicxulub event, suggesting that seismic movements North Dakota arrived within a matter of minutes. He said.

“The sediment happened so quickly that everything is stored in three sizes – not pressed,” said author David Burnham.

“It is like an avalanche that falls almost like flu and then picks up into a concrete. They were suddenly killed because of the violence of that water. We have one fish that struck a tree and which was broken in half. ”

The fossils at Tanis include what was believed in many new fish species, and others which were “the best examples of their kind,” said DePalma, a graduate and graduate student. T Palm Beach Natural History Museum in Florida. t

“We look at periodic records of one of the most striking events in the Earth's history. No other similar record exists on any other site, ”he said.

“And this special event is just linked to all of us – to every mammal on Earth, indeed. Because this is the first place we were to get the planet. There was nothing at that after that. It became a planet of mammals rather than a planet of dinosaurs. ”

The paper is published in the Proceedings of the Natural Sciences Academy.


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