A team from the University of Kansas has discovered a 1.3-metre-thick sedimentary layer that was catastrophically dumped in a single day
, Luis Alvarez, a physicist, and his son Walter, a geologist, made public their theory that the dinosaurs were killed by a massive asteroid strike, it came as a curveball to palaeontologists, who believed dinosaurs had gradually died out through other means.
The layer is loaded with the bodies of marine and freshwater fish. This alone struck Mr DePalma as odd since Hell Creek is not known for the preservation of brackish ecosystems where such animals could mingle. But what proved truly unnerving was the fact that all of the bodies were intact, faced the same direction and were scattered among felled tree trunks.
Supporting this, spheres of what was once molten glass and fragments of quartz generated under exceptionally high pressures and blasted into the air are scattered throughout the site. Some of it was lodged inside the gills of fossilised fish. Presumably, they sucked it in with their last desperate gasps.
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