Fill in the Blanks Geologic Time ReviewOnline version Review of significant events in earth's history. by Sabrina Ewald 1 GOE Carboniferous Mesozoic life ozone Mammals human Shale Invertebrates Creek Silurian ancestors Burgess layer Cretaceous Devonian Pennsylvanian jurmaia Reptiles Pleistocene Mississippian 96% Permian The Paleozoic is known as the Age of . Land plants first appeared in the . The Carboniferous includes the and Periods . Fish dominated in the . The last major ice age peaked during the . The marked the time when oxygen became abundant in the atmosphere . First appeared 3 . 8bya . Dinosaurs died at the end of the . The Mesozoic is known as the Age of . The Cenozoic is known as the Age of . Life was able to evolve when the formed . Lucy was one of the oldest found in Africa . The was the first mammal species . The world's richest fossil bed is the . Hell's contains many fossils from the Era . The rich coal beds in the Appalachians formed during the . The Great Dying occurred at the end of the and of species died .