The flag of the old skull and crossbones is engraved on our ... [Rap] Fifteen men on a dead man’s chest, hanging with a skeleton crew, Eleven men died in the first broadside and the rest we ...
Look for the sagittal suture – the squiggly line that runs the length of the skull – and note whether is it's completely fused. If it is, the remains are likely to be of someone older than 35.