American Mesozoic Mammalia,
by George Gaylord Simpson.
- New Haven, London, Yale university press; H. Milford, Oxford university press, 1929.
- xv, 235 p. illus. (incl. maps) XXXII pl. 32 x 25 cm.
- Yale university. Peabody museum. Memoirs, vol. III, pt. 1 .
Published on the Othniel Charles Marsh publication fund.