 Originally , Brown referred to Corythosaurus as a member of the family <unk> ( now <unk> ) . Inside <unk> were the subfamilies <unk> and <unk> . Brown classified <unk> , Trachodon , <unk> , and Kritosaurus in <unk> , and Corythosaurus , <unk> , and Saurolophus in <unk> . 
