Six charts showing biostratigraphic zones, and correlations based on conodonts from the Devonian and Mississippian rocks of the Upper Mississippi Valley
By: [by] Charles Collinson, Alan J. Scott [and] Carl B. Rexroad.
Published: 1962
Place of publication: Urbana
Language: eng
Number of pages: 32
Subjects: Conodonts.; Paleontology -- Mississippian.; Paleontology -- Devonian.; Paleontology -- Mississippi River Valley.
Notes: Bibliography: p. 28-32.
Cover title.
Addendum and errata on slip inserted.