Ford, T.D., and Breed, W.J., 1973, The problematical Precambrian fossil Chuaria: Palaeontology, v. 16, p. 535-550.
Ford, T.D., and Breed, W.J.
Palaeontology, v. 16, p. 535-550.
Paleontology, Correlation, Chuar Group - Grand Canyon Supergroup - Late Proterozoic,