Two new Jurassic aged (155 million year ago) dinosaurs have been found in central Montana! These “Brontosaurus” type dinosaurs species were previously unknown to paleontologists. The scope of this project is to determine the stratigraphy, sedimentology, depositional facies, vertebrate taphonomy and paleoclimate of the Morrison Formation in central Montana. We will describe the dinosaurs and bring them back to life in their prehistoric environment.