Shonisaurus tooth and jaws (IMAGE) University of Utah Caption Complete tooth and partial jaws (UMNH VP 32539) of the ichthyosaur Shonisaurus popularis from Berlin-Ichthyosaur State Park, Nevada. These new fossils demonstrate that Shonisaurus was an apex predator at the top of its ecosystem. Credit Natural History Museum of Utah / Mark Johnston Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.