Figure 2 (IMAGE) Tohoku University Caption Common types of Gunflint microfossils, with white scale bars at a scale of 0.01mm. Credit Sasaki et al. Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original 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.