The type Fox Hills Formation, Cretaceous (Maestrichtian), South Dakota.
By: Ian G. Speden.
Series: Bulletin / Peabody Museum of Natural History, Yale University -- 33; Bulletin (Peabody Museum of Natural History) -- 33
Publisher: Peabody Museum of Natural History, Yale University
Published: 1970
Place of publication: New Haven, Conn
Language: eng
Number of pages: 222
Subjects: Bivalvia, Fossil -- South Dakota; Mollusks, Fossil -- South Dakota; Paleontology, Stratigraphic -- Cretaceous.; Paleontology, Stratigraphic -- South Dakota; Fox Hills Formation
Notes: Includes bibliographical references and index.