Home | Exhibits | PrehistoricMammals Exhibit Prehistoric Mammals of the CenozoicHerbivores and the Grass Roots MovementHerbivores, including oreodonts, camels, and early horned ruminants, adapted to fit the expanding grasslands 50 million years ago. Case #16. View case index Horses - Before the CartFossils of ancient horses such as Merychippus, Hyracotherium and Pliohippus are shown and placed on an evolutionary family tree. Case #15. View case index Carnivores - Diversify and ConquerCarnivores such as saber-toothed cats and dire wolves overtook Creodonts as the top predators in the Oligocene, 35 million years ago. Case #14. View case index Pleistocene Extinctions - Close Encounters with MankindDuring the later Pleistocene, somewhere between 12,000 and 14,000 years ago, humans began migrating into North America. This exhibit examines the impact that humans may have had on North American mammals including mammoths, American lions and musk oxen. Case #19. View case index Giants - What's the Big Idea?Some mammals such as mammoths, beavers, sloths, and rhinoceroses reached gigantic sizes during the Cenozoic, while other animals isolated on islands became pygmies. Case #18. View case index Proboscideans - Unforgettable FacesOver 500 species of elephants, mammoths and mastodons have existed since the beginning of the Cenozoic, although only two remain today. Learn the differences between mammoths and mastodons. Case #17. View case index
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