Re-identification of plant impressions on prehistoric pottery from Ukraine

Abstract

In this paper, we report newly obtained data on cereals from the Neolithic to Bronze Age from the northern side of the Black Sea. One part of the North Pontic area, located within present-day Ukraine, is one of the focal points of discussions on the agricultural dispersal between West and East Eurasia; however, existing reliable cereal data are scarce. In this study, we employed an improved silicone casting method to obtain impressions from pottery artifacts and conducted a survey of more than 30,000 pottery samples from different times. Observations of seed surface texture using scanning electron microscopy further improved the identification accuracy. The results showed no reliable cereal impressions in Ukrainian sub-Neolithic pottery, despite the predicted exceptionally early start of arable agriculture prior to the 6th millennium BC. In contrast, in Linear Band and Eneolithic pottery, cereals originating from West Asia were identified, although Chinese millet was absent. Meanwhile, abundant Panicum miliaceum impressions appeared abruptly with incidental barley and wheat in Late Bronze Age pottery. The Chinese millet species Setaria italica, which is clearly distinguishable from P. miliaceum using our method, was not identified. The archaeobotanical dataset obtained in this survey is an important achievement in examining food globalization that crossed the east and west of Eurasia.