Possible Clues:

• Tarzan, say
• Billy Idol's kind of yell
• Tarzan is a fictional one
• The Kinks' big swinger
• DNA analysis should enable child in suit to back ancestor
• What Tarzan was
• Does Pa mean to be like Tarzan?
• Title father comes up with for an ancestor
• One tars an example of this, by the sound of it
• Presumed evolutionary link