The earliest examples of talud-tablero constructions date not from the Teotihuacan Early Classic Period, however, but are found in Pre-Classic constructions in the Tlaxcala-Puebla region,[6] with the oldest known dating to c. 200 BC in the Mexican city of Tlalancaleca. It is unknown if Teotihuacan developed their version of the style based on that of Tlalancaleca or if they did so independently.[7] Teotihuacan strongly influenced many other cities which allowed for the architectural style of talud-tablero to be adapted into these cities all over Mesoamerica. Cities and their structures using talud-tablero include: