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.

It turned out Albie has Sagittal Craniosynostosis - a rare condition affecting just one in 2,500 births. Newborn babies have flexible material called sutures that hold parts of their skull together.

My son was having skull surgery for sagittal craniosynostosis ... all connected by fibrous materials called sutures. These sutures, or soft spots, make it easier for the skull to squeeze through ...

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.