 Rudolph Zallinger and Zdeněk Burian both went on to influence the state of dinosaur art while Knight's career began to wind down.Zallinger, a Russia-born American painter, began working for the Yale Peabody Museum illustrating marine algae around the time that the United States entered World War II.He began his most iconic piece of paleoart, a five-year mural project for the Yale Peabody Museum, in 1942.