BY TRACY T HAYERFor the Bulletin The Bandera Museum of Natural History offered two dinosaur-related programs last Saturday to visitors, with museum volunteer Thomas Schaefer giving two tours of the dinosaur replicas and discussing what the world’s geology was like in prehistoric times. Schaefer began by showing how the continents moved or, more accurately, “drifted.” He also showed how “extinction events” like meteor crashes influenced the lives of the animals millions of years ago.Schaefer reported only animals under 30-40 pounds were likely to survive the conditions created when a meteor the size of Mount Everest crashed into the Caribbean Sea.