Fossils from the Earliest Richest fossil Ice Age discovery. The earliest mammoths in North America. The best, longest swimming Reptile Tylosaur in the world. Largest predator megalodon shark jaw with real teeth. Worldwide collection of fossil mammals. Cretaceous and Cenozoic periods. About This Deal: Please provide printed voucher and bring to World Fossil Finder Museum at 719 Jensen Hwy Hot Springs, SD 57747 Please Note... Offer expires Wednesday 09/30/20. One voucher per Family per visit, no cash value, no refunds. Offer Expires Sept 30, 2020.