Sinopse: Há 30 milhões de anos, no alvorecer do Oligoceno, a América do Norte era palco de competições selvagens. Quem não fosse forte e rápido o bastante, viraria o jantar de alguém... FAIR USE NOTICE: We are making this material available in our efforts to advance understanding of environmental, political, human rights, economic, democracy, scientific, and social justice issues, etc. We believe this constitutes a "fair use" of any such copyrighted material as provided for in section 107 of the US Copyright Law. In accordance with Title 17 U.S.C. Section 107, the material on this site is distributed without profit to those who have expressed a prior interest in receiving the included information for research and educational purpose.