It may not have had the most attractive of countenances, but scientists say that an ancient armoured fish represents the oldest known modern facial structure.

He had been chosen as the recipient of the face because they shared the same blood type, skin colour and facial structure.

The dental issues he observed include the proper development of the facial structure (to avoid overcrowding of the teeth) in addition to dental caries.

Vocal range, physical build, hairline shape, facial structure, demeanor and clothing styles are just some of the reasons cited.

Marionette lines appear with advancing age and some people never get them, depending on facial structure and anatomy.