Conodonts from the Devonian Lingle and Alto formations of Southern Illinois.

Bibliographic Details
Main Author:	Orr, Robert William
Format:	Book
Language:	English
Published:	Urbana, [publisher not identified] ; 1964.
Series:	Circular (Illinois State Geological Survey) ; 361.
Subjects:	Conodonts. Paleontology > Illinois > Union County. Paleontology > Devonian.

Description
Physical Description:	28 pages : illustrations
Bibliography:	Bibliography: pages 25-28.