Wildlife of the Miocene era,artwork. The Miocene era is the period from around 23 to 5 million years ago. The animals shown are: a giant land tortoise (Cheirogaster bolivari,bottom left),four prehistoric rhinoceroses (Hispanotherium matritense,centre),four prehistoric horses (Anchitherium sp.,centre left),and two bear-dog animals (Amphicyon sp.,lower right). The latter are fighting over a carcass. Two deer-like animals are at far right. This scene is based on fossils found in the Iberian Peninsula,at the Casa de Campo site |