Everyone decided that a trip to the museum __________ the perfect plan, especially since the Mesozoic __________, when dinosaurs lived, was one of Billy and Shannon's __________ school subjects. During this time, many __________ of years ago, dinosaurs had been __________ common in Wyoming. Conditions around the __________ springs were perfect for the dinosaurs' __________ to fossilize, or turn into rock-like __________. At the museum, workers would show the __________ where and how to dig for the __________ results.