The earliest transverse grooved stones of Eurasia: Near Eastern distribution, types and chronology

Transverse grooved stones (TGS) believed to be used as shaft straighteners, first made their appearance at Epipalaeolithic sites in the Near East from where they spread to the Mediterranean coasts of Africa and Europe, but mostly to Northern Eurasia (the steppe, forest-steppe, and semi-desert zones). It has been discovered that the spread of TGA has been carried out along different paths.  Moreover, grooved stones along each of these transmission routes can be distinguished by their unique decorative and morphological characteristics. The aim of this paper is to clarify the circumstances and the date of appearance of the first TGS, localization of their initial areas, and identification of their respective decorative and morphological features. This is a necessary condition for identifying the starting points of the subsequent transit carriers of TGS' tradition and tracing the directions of interaction in Eurasia during the end of the Pleistocene – the first half of the Holocene period using TGS as markers. The initial database was formed on the basis of the scientific publications on the Near East. The following is a presentation of the analytical review of at least 200 grooved stones and 80 sites in their starting area in south-western Asia. The analysis used a systematic approach with emphasis on chronology, environment, petrography, morphology, functional-typological data where such were available, and TGS’ decor.  But first of all, the study pays attention to the distribution of TGS and their cultural and chronological boundaries in this region.  For this purpose, it was performed the mapping of findings in two chronological levels – up to 8000 thousand BCE and after, with the marking of decorated products. The results enabled us to detect that the geographical spread of grooved artefacts of this type is limited in the Near East to the area of central Anatolia and Fertile Crescent, with a boundary along the desert-steppes. At least three concentrations can be clearly distinguished: the Levant, Zagros Mountains, and Upper Mesopotamia - central Anatolia, where the products are characterized by specific features of decorative and morphological design and in one case (Levant) an additional observed petrographic specificity. Currently, the earliest cases are recorded in Early Natufian contexts in the Levant and in Epipalaeolithic contexts of the Anatolian plateau since the 13th millennium cal BCE. Thus, one can confidently state that the introduction of TGS in the Middle East is generally linked to the Epipalaeolithic sites (Natufian, Harifian, and Western Zarzian) and is definitely associated with hunter-gatherers. The heyday of TGS falls on the PPNA and lasts to the beginning of the early Bronze Age, when they finally disappear.