Craugastor rubinus (IMAGE) University of Cambridge Caption Craugastor rubinus, one of the newly discovered tiny frog species, sits on a Mexican 10 pesos coin - the coin diameter is 28mm Credit Jeffrey W Streicher, The Natural History Museum, London Usage Restrictions With credit as below 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.