(Baltimore Sun photo by Kim Hairston) (Left to right) Don Creveling, Maryland National Capitol Park and Planning Commission, Dinosaur Park manager, Dave Hacker, lead volunteer at the park, and Mary Lehman, Prince Georges County council member for District 1, watch as Steve Jabo, fossil preparator, Smithsonian Institution, examines items as he excavates what is believed to be a dinosaur bone found by Hacker.
