An early Reticuloceras Zone fauna from the Hale Formation in northwestern Arkansas.

Author/creator Gordon, Mackenzie, 1913-
Format Book
Publication InfoWashington : U.S. Govt. Print. Off, 1968.
Descriptioniii, 21 pages, 6 unnumbered pages : illustrations, map ; 29 cm.
Subjects
Ammonoidea.
Paleontology--Pennsylvanian.
Paleontology--Arkansas. --Washington County.

SeriesGeological Survey professional paper ; 613-A
Contributions to paleontology
Geological Survey professional paper 613-A. ^A16492
Contributions to paleontology. UNAUTHORIZED
Local noteJoyner-FOR JOYNER LIBRARY HOLDINGS OF THE SERIES, GEOLOGICAL SURVEY PROFESSIONAL PAPER, SEARCH BY CALL NUMER QE75 .P9.
Bibliography noteBibliography: p. 18-19.
LCCN 70604934
Stock number0.45