Paleontology of the K/T Boundary interval: Badlands National Park, South Dakota.
Reference:
Chamberlain,J.A.,Jr. et al. (2001)
Paleontology of the K/T Boundary interval: Badlands National Park, South Dakota. Proceedings of the 6th Fossil Resource Conference.(V.L.Santucci, editor). Science and Research on Public Lands.
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