EditorialStygimoloch (it means "demon from the Styx"). Genus of pachycephalosaurid dinosaur from the end of the Cretaceous period, roughly 66 million years ago. Fossil stygimoloch spinifer skull. North Dakota, United States. Natural History Museum, Berlin, Germ...
EditorialEDMONTOSAURUS REGALIS. Dinosaur species found in the Upper Cretaceous zone of the Hell Creek formation. Outskirts of Watauga (South Dakota). Geology Museum. Rapid City State of South Dakota. U.S.