What Happened to South America’s Missing
Mega-Mammals, Trilobites, New York Times.
Related papers
Marshall, L.G., 1988. Land mammals and the Great
American interchange. American Scientist, 76(4), pp.380-388.
MacFadden, B.J., Hulbert, R.C. and Baskin, J.A.,
2007. Revised age of the late Neogene terror bird
(Titanis) in North America during the Great
American Interchange. Geology, 35(2), pp.123-126.
Dr. Richard C. Hulbert - More papers
Bruce J. MacFadden - More papers
Baskin, J.A. and Thomas, R.G., 2007. South
Texas and the Great American interchange. Gulf Coast
Association of Geological Socities. 57, pp. 37-45.
Yours,
Paul H.