In aboriginal 2006, a able Neolithic celt (tool) that had engravings akin the Indus calligraphy was begin by a academy abecedary V. Shanmuganathan. The celt, a able hand-held bean axe, has four Indus Valley signs on it. The achievement with the calligraphy was anachronous to 1500 B.C.
The four signs were articular by epigraphists of the Tamil Nadu Department of Archaeology, according to its Special Commissioner, T. S. Sridhar. Iravatham Mahadevan, one of the world's foremost experts on the Indus script, believed that this analysis was actual able affirmation that the Neolithic bodies of Tamil Nadu and the Indus Valley bodies "shared the aforementioned language, which can alone be Dravidian and not Indo-Aryan." He added that afore this discovery, the southernmost accident of the Indus calligraphy was at Daimabad, Maharashtra on the Pravara River in the Godavari Valley. The achievability of the celt advancing from North India was additionally disqualified out as the actual of this bean was of peninsular origin.
The analysis of this celt acquired a activity in archaeological circles. Subsequently, the Archaeological Survey of India absitively to burrow the Sembiyankandiyur armpit to acquisition out its antique and fix the chronology.
Four trenches were laid at the abode area the celt with the engravings were found. Important allegation from the trenches were bowls, dishes, burst urns, full-size urns and added articles. Eight urns were begin to be accumbent in a accurate manner, three of them with animal bones. Some urns had ritual pots inside. Some pots and sherds accept thumb-nail impressions on them.
Full-shape pots had the graffiti depicting a fish, a ‘damaru’, sun, brilliant and a swastika. Geometric designs and marks depicting fish, sun and brilliant and graffiti marks are generally begin on black-and-red ceramics and atramentous ware, with the symbols sometimes repeated.