Bat Guano Researched in Romanian Cave (IMAGE) University of South Florida (USF Health) Caption Dr. Bogdan Onac finds bat guano to be a record of paleo-data. Credit Dr. Bogdan Onac, University of South Florida 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.