Long before humans evolved, there were different life forms dominating the Earth.  At first, it began in the ocean, and slowly, creatures began to adapt to live on the alien land above.  Perhaps the most famous creatures to exist before us were the dinosaurs.  But before them were many spectacular creatures that inhabited the Earth.  Before the land was inhabitable, fish and arthropods lived in the oceans, but as time passed, they began to evolve to inherit the land above.  And after the dinosaurs came the reign of the mammals, where our earliest ancestors began to evolve.  This story will be a bio and fact file about the many different creatures that existed during the prehistoric era.  Join me on our journey through time.