More recently in 2013, Rajan and Yatheeskumar published excavations at Porunthal and Kodumanal in Tamil Nadu, where numerous both Tamil-Brahmi and "Prakrit-Brahmi" inscriptions and fragments have been found.[33] Their stratigraphic analysis combined with radiocarbon dates of paddy grains and charcoal samples indicated that inscription contexts date to as far back as the 6th and perhaps 7th centuries BCE.[34] As these were published very recently, they have as yet not been commented on extensively in the literature.