Ocean Channel Marks Genetic Rift in Brazilian Free-Tailed Bats (image) Florida Museum of Natural History Share Print E-Mail Caption The dashed line marks the Northwest and Northeast Providence Channels, which divide populations of free-tailed bats that last shared an ancestor hundreds of thousands of years ago. Bats were collected from locations marked with white dots. Credit Speer et al. in Ecology and Evolution Usage Restrictions Credit Speer et al. in Ecology and Evolution 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.