Introduction / M.O. Woodburne -- Principles, classification, and recommendations / M.O. Woodburne -- Mammal ages, stages, and zones / M.O. Woodburne -- North American Paleocene land mammal ages and zones / J.D. Archibald -- Eocene biochronology of North America / R.M. West -- The Chadronian, Orellan, and Whitneyan North American land mammal ages / R.J. Emry -- Faunal succession and biochronology of the Arikareean through Hemphillian interval / R.H. Tedford -- The North American quaternary sequence / E.L. Lundelius, Jr. -- Biochronology of the microtine rodents of the United States / C.A. Repenning -- Mammalian chronology and the magnetic time-scale / E.H. Lindsay -- Summary / M.O. Woodburne
