We all of course have heard of this massive meteor impact and it is supposed that it was the cause of the end of the dinosaur days on Earth. I did not know they had found what appears to be a place, that when you think about it makes sense, where the massive tsunami – like wave (in this case a seiche) resulting from the impact would wash up a layer of what resulted in fossilized plant and animal debris. This debri layer has been found in North Dakota, and what they have been finding there is spectacular. I quote:

“This unique, fossilized graveyard — fish stacked one atop another and mixed in with burned tree trunks, conifer branches, dead mammals, mosasaur bones, insects, the partial carcass of a Triceratops, marine microorganisms called dinoflagellates and snail-like marine cephalopods called ammonites — was unearthed by paleontologist Robert DePalma over the past six years in the Hell Creek Formation, not far from Bowman, North Dakota. The evidence confirms a suspicion that nagged at DePalma in his first digging season during the summer of 2013 — that this was a killing field laid down soon after the asteroid impact that eventually led to the extinction of all ground-dwelling dinosaurs. The impact at the end of the Cretaceous Period, the so-called K-T boundary, exterminated 75 percent of life on Earth.”  …and:

“This is the first mass death assemblage of large organisms anyone has found associated with the K-T boundary,” said DePalma, curator of paleontology at the Palm Beach Museum of Natural History in Florida and a doctoral student at the University of Kansas. “At no other K-T boundary section on Earth can you find such a collection consisting of a large number of species representing different ages of organisms and different stages of life, all of which died at the same time, on the same day.”  End Qoute.

Wow. This pic shows several fish fossils layered up.

The only other thing I can think of where something like this might happen would be where a large body of water drained or dried up rather quickly, leaving the fish behind, to meet their fate. But the thing is these fossils are associated with huge amounts of tektites, glass gravel like objects formed by guess what? Meteor impacts. Debris gets blasted into the atmosphere, likely into space, and falls back to earth in a dangerous glassy rainstorm.

This pile of debri also has burned (it is thought the tektites rained down in such a massive scale the energy released would have ignited massive wildfires) plant matter from the time, and a few dinosaurs mixed in. All of this directly underneath the KT impact iridium layer. Making for a compelling case.

For much more in depth detail, read up on it here:

https://news.berkeley.edu/2019/03/29/66-million-year-old-deathbed-linked-to-dinosaur-killing-meteor/