The Brassus mammoth evokes the last glacial episode. A hippopotamus is a reminder of the subtropical climate of Lausanne 25 millions years ago. Marine reptiles testify to our seas in past times.
From the first living organisms to the Brassus mammoth, nearly four billions years of life evolution are shown. A particular highlight is given on fossils found in Lausanne which testify of a tropical climate 25 million years ago with rhinoceroses, crocodiles and palm trees.