Bronze Age Human Skull (image) Cell Press Share Print E-Mail Caption The photo shows a Bronze Age human skull from the Yamnaya culture painted with red ochre. Yamnaya later developed into the Afanasievo culture of Central Asia, one of the cultures that carried the early strains of Y. pestis. Credit Rasmussen et al./Cell 2015 Usage Restrictions Credit Required. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.