Scaphitoid cephalopods of the Colorado group
Subtitle: Evolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States.
Series: Geological Survey professional paper 239
Publisher: U.S. Govt. Print. Off.
Published: 1951
Place of publication: Washington
Language: eng
Number of pages: 42
Subjects: Ammonoidea.; Scaphites.; Paleontology -- Cretaceous.
Description: Evolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States.
Notes: "References": p. 39.