Black and yellow frog (IMAGE) Michigan State University Caption Research from Michigan State University provides a more comprehensive account of the status of harlequin frogs. Many species are still believed to be extinct, but others have been rediscovered in the wild, providing a case study in persistence that could help improve protection and conservation efforts. Credit Morley Read Usage Restrictions Permission to use these photos is granted for news coverage of this research with appropriate photo credit 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.