Euryoryzomys russatus (IMAGE) Field Museum Caption By measuring characteristics like ear, foot, and tail size in species like Euryoryzomys russatus, researchers can quantify functional diversity in large rainforests. Credit Photo courtesy of Ricardo S. Bovendorp Usage Restrictions Please credit and caption as indicated. 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.