Contributions to the paleontology of Iowa; [electronic resource] being descriptions of new species of Crinoidea and other fossils. By James Hall, state geologist and palOEontologist. Supplement to volume I, part II, of the geological report of Iowa. Pub. by authority of the Legislature of Iowa.
Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Digital Library Initiatives, 2000. Includes both TIFF files and keyword searchable text. [Making of America] This volume is made possible by a grant from the Andrew W. Mellon Foundation as part of Making of America IV: the American voice, 1850-1877.