40,000 BC - First Eurasians cross the Bering landbridge to North America.
20,000 BC - First Northern Americans arrive in Mexico.
8,000 BC - First agriculture in Mexico.
5,000 BC - First agriculture record in Los Tuxtlas.

1,300 BC or later - Olmecs occupy area around Tres Zapotes, which stays occupied till around 1,000 AD.
400 BC - 300AD - Olmec culture flowers at Tres Zapotes.

100 BC? - Teotihuacan founded
400 AD - 1000 AD - Teotihuacan influenced peoples occupy a massive community 10 miles from Catemaco.

1325 - Tenochtitlan (Mexico City) founded by Aztecs
1465? - Aztec emperor Motecuhzoma Ilhuicamina (1440-1469) conquers the southern Veracruz area.

1492 - Caribbean Indians meet Columbus

1867 - First Tuxtlas Olmec head mentioned
Archaeology of Los Tuxtlas

Timeline