73-million years old Dinosaur mass grave with thousands of fossils found in Canada’s “River of Death”

Alberta's Pipestone Creek, dubbed the "River of Death," is a treasure trove of Pachyrhinosaurus fossils, offering unprecedented insights into dinosaur life. The dense bone bed, discovered in 1973, represents a catastrophic event that wiped out a migrating herd 73 million years ago. Researchers have cataloged over 8,000 bones, revealing details about herd behavior and population dynamics.

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