Around 90 million years ago, eastern and western North America were isolated from each other by a salty sea, creating two landmasses: Appalachia and Laramidia. The ancestors of Triceratops and Tyrannosaurus strutted about on the latter in what would one day become Utah and Alberta, leaving plentiful bones behind. A lack of fossils from eastern North America, however, has obscured Appalachia, leading to it being called a ‘lost landmass.’ Now, new...
