569 africa alaska amazonriverregion america anthropology[mesh] arcticregions australia climaticchanges congresses continentalmargins cretaceous east eurasia evolution fossil fossilhominids geology historicalgeology mammals naturalhistory newzealand paleobotany paleoclimatology paleoecology paleontology paleontology[mesh] plantecology plants platetectonics russia(federation) rw60123 stratigraphic structural tertiary volcanism