The prehistoric Sinclair family continues dealing with the everyday issues dinosaurs face, including Fran's frustration with Earl's inability to change a diaper, Robbie's teenage impulses and Charlene's humiliation over her Earth-is-round theory. Created by Jim Henson Productions, the Emmy Award-winning comedy series features state-of-the-art puppetry and a voice cast that includes Jessica Walter, Kevin Clash and Sally Struthers.