(worked on from 1926 through 1930) to depict life reconstructions of prehistoric animals in the different sections of the new fossil hall of the museum for "Life Over Time". One of the large murals depicted the Permian Period, with a group of five "Dimetrodons", and a single "Edaphosaurus", along with a group of "Casea", basking in the sun surrounded by a large marsh. The Permian mural was finished in 1930. Paleontologist Elmer Riggs described the new artistic addition in the March 1931 issue of the "Field Museum News" and used the name ""Naosaurus"" for "Edaphosaurus", described as "inoffensive, and given to feeding on plants". Knight's 1930 depiction of "Edaphosaurus", apart from its shortened tail, was much more accurate than his earlier images of ""Naosaurus"" for the American Museum of Natural History, incorporating a small head and a curved profile to the sail spines.