¡Viva Mexico!: Mayan archaeological sites, graves found in southeastern Mexico

Mayan archaeological sites, graves found in southeastern Mexico - Fox News Latino: "Mexican experts have discovered seven new Mayan archaeological sites and an 'important concentration' of pre-Columbian graves in the southeastern state of Yucatan, the National Institute of Anthropology and History, or INAH, said....

The pieces date back to the Maya's Late Preclassic period (400 B.C.-200 A.D.), which "changes the previous chronology for this Maya region" in that area of the country, INAH said in a statement."