New and little-known ammonites from the Upper Cretaceous (Cenomanian and Turonian) of the western interior of the United States
By: by William A. Cobban.
Series: Geological Survey professional paper 699; Geological Survey professional paper ;; 699.
Publisher: U.S. Govt. Print. Off.
Published: 1971
Place of publication: Washington
Language: eng
Number of pages: 38
Subjects: Ammonoidea -- West (U.S.); Paleontology -- Cretaceous.; Paleontology -- West (U.S.)
Notes: Bibliography: p. 20-22 (2d group)