Although the majority of the artefacts so far found at the site are of Chalcolithic age, some researchers believe that the site may have already in use as a source of flint during the middle of the Neolithic by people of the Vinča culture. This is based on initial comparisons of Neolithic chipped stone artifacts to the geological material at Piatra Tomii. This theory has not yet been confirmed by the archaeological record for the middle Neolithic period, but during test pitting in 2009, Petrești type pottery was found at the site, indicating that the site was in use long prior to the arrival of the Coțofeni population (and possibly abandoned until the late Coțofeni people arrived). The potsherts were found in and next to a flint extraction pit along with axes and chisels and an ashy soil, suggesting that they were also extracting the flint. It is possible that the material used during earlier cultures of the Neolithic period may have come from another flint source very near to but not at Piatra Tomii itself. Since only a small percentage of this site has been excavated, it is also possible that remains of Vinča culture simply have not yet been found at Piatra Tomii.

• http://en.wikipedia.org/wiki/Piatra Tomii