Conodont Puzzle (IMAGE) University of Leicester Caption The palaeontologists' puzzle -- each of these conodont teeth is less than a millimeter long. Working out how the different shapes fitted together, and which were parts of the same skeleton is a complex problem. Credit University of Leicester Usage Restrictions Use only with 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.