Limestone Rock Containing Fossils (IMAGE) U.S. National Science Foundation Caption This is an image of limestone rock containing fossils; fossil of interest is highlighted in blue using automated image tracing software. The serial grinding process created nearly 500 such images that the scientists stacked and autotraced to create a 3-D model. Credit Maloof Lab/Situ Studio 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.