Vol. 244, Issue 1, 1946January 01, 1946 EDT
The Duchesnean Fauna and the Eocene-Oligocene Boundary
The Duchesnean Fauna and the Eocene-Oligocene Boundary
George Gaylord Simpson,
Simpson, G. G. (1946). The Duchesnean fauna and the Eocene-Oligocene boundary. American Journal of Science, 244(1), 52–57. https://doi.org/10.2475/ajs.244.1.52