In 1998, a team of Field Museum scientists was working in the Augusta Mountains of Nevada. It was then, that the specimen we know as "Jim" was found. Martin Sander, a German paleontologist at the University of Bonn and co-leader of this Field Museum expedition made sure to include the size and characteristics of Jim's teeth in his field notes. Using these field notes from the Field Museum's expedition, Dr. Nadia Frobisch, of the Museum fur Naturkunde in Berlin, and member of this Field Museum project, returned to Nevada, excavated Jim, and published a paper which documented a new genus and species of Ichthyosaur, Thalattoarchon saurophagis or "the lizard-eating ruler of the seas." We now know that Jim was a 28-foot-long marine super predator that lived during the Triassic Period 244 million years ago.