Carbon dating of samples excavated from the Adichanallur site in Thoothukudi district has revealed that they belonged to the period between 905 BC and 696 BC.
Carbon dating of artefacts was done in the Beta Analytic Testing Laboratory, USA.
With the artefacts having Tamil inscriptions, this could prove that Tamil was older than Prakrit language, dated to be from 268 BC to 232 BC.