Pennsylvanian conodont biostratigraphy and paleoecology of northwestern Illinois
By: by Glen K. Merrill
Series: Microform publication - Geological Society of America -- 3
Publisher: Geological Society of America
Published: 1975
Place of publication: Boulder, Colo
Language: eng
Format: [microform] /
Number of pages: 130
Subjects: Conodonts; Paleoecology
Notes: Includes 4 cards of ill. 9 x 12. 8 cm.

Includes bibliographical references (leaves 124-127).

Microfiche. Boulder, Colo. : Geological Society of America, 1975. 2 sheets. 11 x 15 cm.