Fleagle and Kappelman suggest that the region in which Ardi was found is difficult to date radiometrically, and they argue that Ardi should be dated at 3.9 million years.
Fleagle i Kappelman predlažu da je regija u kojoj je Ardi pronađena teška za datiranje radiometrijskim postupkom, te smatraju da bi se starost Ardi trebala smanjiti na 3,9 milijuna godina.