Editing Indus script (section)

===Post-Harappan===
{{Main|Megalithic graffiti symbols}}

Numerous artefacts, particularly potsherds and tools, bearing markings inscribed into them have been found in Central India, South India, and Sri Lanka dating to the [[Megalith]]ic Iron Age which followed the Late Harappan period. These markings include inscriptions in the Brahmi and [[Tamil-Brahmi]] scripts, but also include non-Brahmi [[Megalithic graffiti symbols|graffiti symbols]] which co-existed contemporaneously with the Tamil-Brahmi script.{{sfnp|Ray|2006|p=21-22}} As with the Indus script, there is no scholarly consensus on the meaning of these non-Brahmi symbols. Some scholars, such as the anthropologist [[Gregory Possehl]],{{sfnp|Possehl|1996}} have argued that the non-Brahmi graffiti symbols are a survival and development of the Indus script into and during the 1st millennium BCE.{{sfnp|Ray|2006|p=21-22}} In 1960,{{sfnp|Lal|1960}} archaeologist [[B. B. Lal (archaeologist)|B. B. Lal]] found that a majority{{efn|47 out of 61 signs surveyed.}} of the megalithic symbols he had surveyed were identifiably shared with the Indus script, concluding that there was a commonness of culture between the Indus Valley Civilisation and the later Megalithic period.{{sfnp|Ray|2006|pp=21–22}} Similarly, [[early Indian epigraphy|Indian epigraphist]] [[Iravatham Mahadevan]] has argued that sequences of Megalithic graffiti symbols have been found in the same order as those on comparable Harappan inscriptions and that this is evidence that language used by the Iron Age people of south India was related to or identical with that of the late Harappans.{{sfnp|Mahadevan|2001a}}{{sfnp|Mahadevan|2004}}{{sfnp|Mahadevan|2006}}