Pennsylvanian conodont assemblages from La Salle County, northern Illinois
By: Charles Collinson ... [et al.].
Contributors: Collinson, Charles William; Pander Society.; Geological Society of America. North-Central Section.
Series: Guidebook series / Illinois State Geological Survey -- 10; Guidebook series (Illinois State Geological Survey) -- 10.
Publisher: Illinois State Geological Survey
Published: 1972
Place of publication: [Urbana
Language: eng
Number of pages: 37
Subjects: Conodonts.; Geology, Stratigraphic -- Pennsylvanian.; Geology -- Illinois -- La Salle County.
Notes: "Prepared for annual meeting, Pander Society, in cooperation with North-Central Section, The Geological Society of America, De Kalb, Illinois, May 11-14, 1972."

Bibliography: p. 37.