Chris Reinhard, Timothy Lyons, University of California - Riverside (image) University of California - Riverside Share Print E-Mail Caption Geoscientists Chris Reinhard (left) and Timothy Lyons (right) of UC Riverside examine a 2.5 billion-year-old black shale from Western Australia. Reinhard, a graduate student, works in Lyons's laboratory. Credit UCR Strategic Communications. Usage Restrictions None 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.