Conodonts from the Chester series in the type area of southwestern Illinois.

Bibliographic Details
Main Author:	Rexroad, Carl Buckner, 1925-
Format:	Book
Language:	English
Published:	Urbana, [publisher not identified] ; 1957.
Series:	Report of investigations (Illinois State Geological Survey) ; no. 199.
Subjects:	Conodonts. Paleontology > Illinois. Paleontology > Mississippian.

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