The team of researchers has discovered in the United States very well preserved fossils of fish killed there 66 million years, when the impact of the asteroid responsible for the disappearance of 75% of life on Earth and possibly dinosaurs.
These fossils of fish and other animal ancestors have been found in North Dakota, in 3000 km from the crater Chicxulub, where an asteroid collision has occurred in the Caribbean.
The study, which will be published on Monday in the journal Proceedings of the National Academy of Sciences, shows how this event was very quickly a devastating impact on large areas, said the lead author, Robert DePalma, cites a dedicated website EurekAlert, "This is like a museum in the late Cretaceous to the layer thickness of one meter and a half," describes Mark Richards, co-author and professor emeritus of the University of California at Berkeley, in a statement of the Institute.
Tremors caused by an asteroid strike spawned giant waves in the inner sea, where is now North Dakota, which is reaching the river the fish posture, facing this, the statement said, streams of stones and garbage, who met them before the second wave will come and bury them. They then turned to stone with the same temps.Avant be killed fish breathed –des fragments ejected promoted under the influence of the asteroid, link researchers, who found piles in the gills. Biodiversity found on the site is typical. "At least, a few samples are new species, and the other with a & # 39 is the best example of its kind"Mr. DePalma Welcomed.