Mystery surrounds ancient but advanced tools found in India - ABC news

Description

In today's issue of Nature, researchers report a
discovery of more than 7,000 stone tools showing a
distinct upgrade in stone-shaping techniques —
including advanced blades, points and scrapers —
dating as far back as 385,000 years ago.

Subject

The age order of the sediment layers "looks good", said Kira Westaway, a luminescence dating expert at Macquarie
University.
But, she added, "it would have been good if the researchers dated more than one sample from the 385,000-year-old
sediment layer.