Fossil remains of the dinosaur, which lived 66 million years ago, were discovered between 1939 and 1940 in Fresno County by William J. Morris and Gretchen Augustyn, for whom the species is named. According to the bill, scientists originally mistook the the dinosaur for a member of an already-known genus—Saurolophus—but a later study determined it to be a separate species. Two specimens are held in the Dinosaur Hall of the Natural History Museum of Los Angeles, where busloads of visitors come see it every day.
The duck-billed creature joins several dozen other official California things including the official California Mineral (Gold), official California gemstone (Benitoite), the official California Rock (Serpentine), and the official California Bird (Quail). California State Symbols