Getting started -- Location, location, location -- Floods, temperature, evolution, and it's about time -- How do they do that? -- Early on : middle Cretaceous through the early Eocene -- Transition : middle Eocene through the early Miocene -- Modernizing : middle Miocene through the Pliocene -- Latest touch : the great ice ages -- The bigger picture : implications of past environmental changes in the New World -- Pole to pole : a walk over the landscape, a walk through time.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.