Rather than picturing the animals as drowning while crossing a river, a classic scenario that has been used to explain bonebed occurrences at many sites in Alberta, the research team interpreted the vast coastal landscape as being submerged during tropical storms or hurricanes.
With no high ground to escape to, most of the members of the herd drowned in the rising coastal waters. Carcasses were deposited in clumps across kilometres of ancient landscape as floodwaters receded.
“It's unlikely that these animals could tread water for very long, so the scale of the carnage must have been breathtaking,” said Mr. Eberth. “The evidence suggests that after the flood, dinosaur scavengers trampled and smashed bones in their attempt to feast on the rotting remains.”
Link via Geekosystem | Image: West Virginia University at Parkersburg