The Most Dangerous Ecosystem in Earth’s History | Hell Creek

What was the most dangerous ecosystem in Earth’s history? Around 66 million years ago, in what is now Montana, the Hell Creek Formation preserved one of the most crowded and dangerous worlds ever recorded in the fossil record. This was the final ecosystem of Tyrannosaurus rex, Triceratops, Edmontosaurus, Ankylosaurus, Dakotaraptor, ancient crocodilian relatives, pterosaurs, insects, parasites, and small mammals hiding in the margins. But Hell Creek was not dangerous because of one animal. It was dangerous because every layer of the ecosystem had its own way of killing you. Adult T. rex ruled the apex predator layer, but it was not alone. Smaller tyrannosaurs and fast mid-sized hunters filled the gaps below it. Triceratops could fight back against predators. Ankylosaurus carried a bone-shattering tail club. Edmontosaurus herds could become a stampede hazard. The rivers hid ambush predators. The floodplain could drown or bury animals. Insects, parasites, infection, climate shifts, volcanic stress, and finally the asteroid all added pressure on top of an already dangerous world. Most deadly environments are deadly because almost nothing can survive there. Hell Creek was different. Hell Creek was deadly because everything could survive there, and all of it was packed into the same ecosystem at the same time. This is the story of Earth’s most dangerous ecosystem, the final world before the asteroid ended the age of dinosaurs. Like and subscribe for more cinematic documentaries about evolution, dinosaurs, prehistoric life, extinct animals, natural history, paleontology, and the science behind the most extraordinary creatures that ever lived. #dinosaurs #paleontology #evolution