"After the dinosaurs died out, Earth was by no means empty. There were still some little resourceful critters around who, without big predators to hunt them down, survived and thrived. Who were these scrappy creatures? Early mammals, our ancestors! In the Cenozoic Era, mammals rose to dominance and spread over the globe, resulting in woolly mammoths, saber- toothed tigers, and eventually all of humankind. In this adventure, Ronnie will meet the three kinds of mammalsmonotremes, marsupials, and placental mammalsas well as the other amazing ancient beasts they shared the Earth with during the Cenozoic Era. Travel along on this fascinating journey through time, from 66 million years ago to present day."-- cover page 4.
Series:
Earth before us Howard, Abby (Comic artist). Earth before us.
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.