BERLIN - JULY 13: A Brachiosaurus skull is seen at the new rooms 'Evolution in Action' at the Museum of Naturkunde, The Natural History Museum in Berlin, on July 13, 2007. The aim of this newly renovated hall is to show the living world 150 million years ago as existed in Tendaguru, East Africa. The centrepiece is the world?s largest mounted dinosaur skeleton, a Brachiosaurus brancai, at 15,50 metres long and 13,27 metres tall. Before its death, the animal weight nearly 50 tons.