Site code TZU given by Text Database and Dictionary of Classic Mayan. Location not provided in primary source (Hanratty et al. 2016).

Hanratty, Colleen, Bruce Love, Stanley Guenter, and Thomas H. Guderjan
2016 First Evidence of the Ka’an Dynasty in Northern Belize. Mexicon 38(6): 141–142.
Stuart, David
2017 An Intriguing Date on the Tz’unun Panel. Maya Decipherment. https://decipherment.wordpress.com/2017/01/20/an-intriguing-date-on-the-tzunun-panel/