Emergence as a Middle Formative regional centerJan 1, 900 BCELabels: Tres Zapotes, Olmec regionalOxford HBWiki
Earliest known public architecture at the siteJan 1, 500 BCELabels: Public architecture, Tres ZapotesWikiOxford HB
Late Formative fluorescence as an Epi-Olmec centerJan 1, 400 BCELabels: Epi-Olmec, Tres ZapotesOxford HBWiki
First Olmec colossal head found near Tres ZapotesJan 1, 1862Labels: Colossal head, Monument AWikiWiki Heads
Stirling begins professional excavations at Tres ZapotesJan 1, 1938Labels: Matthew Stirling, ExcavationWiki StirlingWiki
Stela C’s inscribed fragment discovered in excavationsJan 1, 1939Labels: Stela C, Excavation findWiki StirlingNature
Stirling’s 1939 Tres Zapotes expedition documentedApr 2, 1939Labels: Smithsonian Archives, Stirling expeditionSIA
Long Count date on Stela C confirmed by missing fragmentJan 1, 1970Labels: Stela C, Long CountWiki Stirling
Recent synthesis re-assesses Tres Zapotes’ long trajectoryNov 19, 2025Labels: Scholarly synthesis, Tres ZapotesOxford HB