A newly identified ‘Hell chicken’ species suggests dinosaurs weren’t sliding toward extinction before the fateful asteroid hit
- Written by Kyle Atkins-Weltman, Ph.D. Student in Paleoecology, Oklahoma State University

Were dinosaurs already on their way out when an asteroid hit Earth 66 million years ago, ending the Cretaceous, the geologic period that started about 145 million years ago? It’s a question that has vexed paleontologistslike us for more than 40...