Permo-Carboniferous fresh water burrows /

Bibliographic Details
Main Author:	Olson, Everett C. (Everett Claire), 1910-1993
Other Authors:	Bolles, Kathryn
Format:	Book
Language:	English
Published:	[Chicago] : Field Museum of Natural History, 1975.
Series:	Publication (Field Museum of Natural History) ; 1219. Fieldiana. Geology ; v. 33, no. 15.
Subjects:	Burrowing animals, Fossil. Paleontology > Permian. Paleontology > Carboniferous. Lungfishes, Fossil. Amphibians, Fossil. Sedimentary structures > United States.