Late Jurassic Habitat Reconstruction (IMAGE) University of Kansas Caption Mesogyrus anatiquus, the heterogyrine whirligig, spins about the water surface. Credit Trevor Fristoe Usage Restrictions None 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.