Dinosaurs Photo Gallery

65 million years ago, the Age of the Dinosaurs came to an end when a catclysmic event led to mass extinctions. This period of abrupt change in life on earth is known as the K/T Boundary, marking the end of the Cretaceous (K) period and the start of the Tertiary (T) period. The K/T boundary can be clearly seen in sedimentary rocks such as those searched by dinosaur hunters in Montana.