1976 195 p., paperbound (no covers, as issued). Some spotting on title-page.Lists 1637 species from the Americas south of the United States (contains new combinations, synonyms and new names).
1948-1954 467 p., 27 figs, 102 pls, 4to, paperbound (corner of front cover and upper end of spine of article 1 missing). University of Kansas Paleontological Contributions.
1991 148 p., 66 figs, 27 pls, 4to, paperbound. Am. Mus. Nat. Hist. Micropal. Pr. Spec. Publ. 5.
1986 [14], 553 p., num. figs, hardbound. Library stamps.