Tiktaalik vs. alligator gar (IMAGE) University of Chicago Caption Side-by-side comparison of Tiktaalik (top) and alligator gar (bottom) showing similarly shaped snouts that may suggest convergence in feeding strategies. Credit Justin Lemberg (University of Chicago). Usage Restrictions May only be used for this specific story 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.