The Origin of the Primorskaya Culture (an analysis of the Pribrezhnoe and Ushakovo-3 dig sites)
... separate group of settlements on the Vistula Lagoon shore — Waldburg-type monuments. Taking into consideration the distinctive cultural features of the complex, and its early dating, we can safely assume the existence of a protophase in the course of Primorskaya Culture development, which hypothetically took place between 3100—2900 BC. Globular Amphorae Culture and Sub-Neolithic Cultures could have influenced the protophase the most.
1. Зальцман Э. Б. Поселения культуры шнуровой ...
