Dear Bay Weekly:     A friend and colleague from Missouri recently visited the area and brought her family. They made a special trip to the Calvert Marine Museum because of her young son’s interest in paleontology. Her son, Ben, had seen Dr. Stephen Godfrey featured in a National Geographic Prehistoric Predators special on Megalodon Sharks. The family was pleased that Dr. Godfrey agreed to meet five-year-old Ben and give him a special tour of the Calvert Marine Museum....