Cooperstown Pierre Shale Site

Corridor of Time Exhibit

Plioplatecarpus

A New Species of Mosasaur Discovered in North Dakota?

Mosasaur were Reptiles, but not dinosaurs

US And Canadian Fossil Sites -- Data for North Dakota

Invertebrate Fossils from the Pierre Shale

Summer Dig Planned for giant sea turtle remains

Pierre Shale

Western Interior Seaway

Lake Agassiz