http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Early Cenozoic paleontology and stratigraphy of the Bighorn Basin, Wyoming
commemorating the 100th anniversary of J.L. Wortman's discovery of fossil mammals in the Bighorn Basin
vi, 146 pages : illustrations, maps ; 26 cm.
Subtitle on cover includes dates "1880-1980."