Vol. 262, Issue 2, 1964February 01, 1964 EDT
Potassium-argon Dates and the Cenozoic Mammalian Chronology of North America
Potassium-argon Dates and the Cenozoic Mammalian Chronology of North America
J. F. Evernden, D. E. Savage, G. H. Curtis, G. T. James,
Evernden, J. F., Savage, D. E., Curtis, G. H., & James, G. T. (1964). Potassium-argon dates and the Cenozoic mammalian chronology of North America. American Journal of Science, 262(2), 145–198. https://doi.org/10.2475/ajs.262.2.145