Tools (IMAGE) Lomonosov Moscow State University Caption Ivory tools from Sungir stand burials: 1,2 - "shaft straighteners"; 3 - "retoucher". Credit Source: Taisiya Soldatova Usage Restrictions None License Licensed content 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.