1971 Zoogeographic affinities of the Tertiary marine molluscan faunas of northeastern Brazil. Simposio Brasileiro de Paleontol. Acad. Brasileiro Ciencias Anais 43 (Suppl.): 119-24.

1973 Affinities of Miocene marine molluscan faunas on Pacific side of Central America. Inst. Centrolamericano Investigacion y Technol. Indust. Publ. Geol. 4:179-87.

1974 The Miocene Caribbean faunal province and its subprovinces. Contributions to the geology and paleobiology of the Caribbean and adjacent areas. Naturforschende Gesellshaft in Basel Verhandlung 84:209-13.

1976 Age of the El Salto Formation of Nicaragua. Inst. Centroamericano Invest. y Technol. Indust. Publ. Geol. 5:18-21.

A massive Oligocene (?) pycnodonteine oyster from Costa Rica. J. Paleontol. 50:851-57.

1978 Distribution of Tertiary marine molluscan faunas in southern Central America and northern South America. Univ. Nacional Autonoma de México. Inst. Geol. Bol. 101:153-65.

With R. H. Stewart and J. L. Stewart. Geologic map of the Panama Canal and vicinity, Republic of Panama U.S. Geol. Surv. Misc. Invest. Ser. Map no. 1-12132, 1:100,000.

1957-82 Geology and paleontology of Canal Zone and adjoining parts of Panama: A contribution to the history of the Panama land bridge. U.S. Geol. Surv. Prof. Pap. no. 306, chapters A-F, 759 pp.

The National Academies of Sciences, Engineering, and Medicine
500 Fifth St. N.W. | Washington, D.C. 20001

Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement