Nuun Ujol Chaak[N 1] also known as Shield Skull and Nun Bak Chak (born before 657–c.679), was an ajaw of the major Maya city of Tikal. He took the throne before 657 and reigned probably until his death.[1]
Notes
^The ruler's name, when transcribed is ?-(u)-JOL CHA:K, translated "?-headed CHAAK", Martin & Grube 2008, p.42.