Tool Assemblage (IMAGE) University of Colorado at Boulder Caption An assemblage of bone and ivory artifacts from the lowest layer at Kostenki that includes a perforated shell, a probable small human figurine (three views, top center) and several assorted awls, mattocks and bone points dating to about 45,000 years ago. Credit CU-Boulder 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.