Ali Larter, David Carradine, Tom Arnold, Talia Shire and newcomer Hayes MacArthur have joined the cast of caveman comedy
Homo Erectus, according to the Hollywood Reporter.
Writer, director and star Adam Rifkin the film centers on Ishbo (Rifkin), a philosophical caveman who loves Fardart (Larter), but she only has eyes for Ishbo's studly, dimwitted brother, Thudnik (MacArthur).
Carradine and Shire will play Ishbo's parents, while Arnold will play Rog, a gay caveman.