The type Fox Hills Formation, Cretaceous (Maestrichtian), South Dakota. Pt. 1. Stratigraphy and paleoenvironments / Karl M. Waage. — New Haven, Conn. : Peabody Museum of Natural History, Yale University, 1968. — [6], 175 с., [25] л. іл., тэкста. — (Bulletin ; 27) - Waage, Karl M. (Bulletin, 1968)