Complex sentence: The perforated teeth, non-perforated canines, and metacarpals of brown bears were used strictly for decoration, yet were not a common source of bone usage, for they were not considered regular prey.
Split into simpler sentences: The perforated teeth, non-perforated canines, and metacarpals of brown bears, however, were utilized strictly for decoration. These bears were not a common source of bone usage, for they were not considered regular prey.