Pennsylvanian invertebrates of the Mazon Creek area, Illinois.
Series: Fieldiana: geology;; v. 12, nos. 1-5.; [Chicago. Natural History Museum] Publication 785,869.; Publication (Field Museum of Natural History : 1966) ;; 785,869.
Publisher: Chicago Natural History Museum
Published: 1956
Place of publication: [Chicago]
Language: eng
Number of pages: 82
Subjects: Invertebrates, Fossil.; Paleontology -- Pennsylvanian.; Paleontology -- Illinois -- Grundy County.; Paleontology -- Illinois -- Will County.
Notes: Includes bibliographies.