2008, in collaboration with our good friends at the Field Museum in Chicago, we launched a project to identify the dinosaurs that lived and died in between these two well known intervals. Previous hypotheses have suggested that Late Jurassic dinosaur communities died out and were replaced by immigrant dinosaurs from Asia, via a newly formed land bridge between the two continents during the Early Cretaceous. We call this “Clash of the Titans.” If true than these new dinosaurs with Asian ties established themselves in western North America and redefined dinosaur communities on the continent for the next 40 million years or so, ultimately giving rise to the famous dinosaurs of the Late Cretaceous |