Syrinx Transparent (IMAGE) University of Texas at Austin Caption A new study of the first fossil vocal organ from a bird from the Mesozoic provides insight into the evolution of bird calls and song. The fossil was found in Antarctica and comes from a relative of ducks and geese that lived more than 66 million years ago during the age of dinosaurs. Credit J. Clarke/UT Austin Usage Restrictions credit 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.