<p> Match an Era with the Description Match an Era with the Description</p><p>PC-Precambrian P- Group the descriptions from PC-Precambrian P- Group the descriptions from Paleozoic oldest to most recent Paleozoic oldest to most recent M-Mesozoic C-Cenozoic M-Mesozoic C-Cenozoic Age of Dinosaurs Age of Dinosaurs Age of Fish Age of Fish Age of Mammals Age of Mammals Appalachain Mtn. range begin to Appalachain Mtn. range begin to form form Atmosphere forms Atmosphere forms First birds First birds Collisions of Laurasia and Collisions of Laurasia and Gondwana form major mtn. Gondwana form major mtn. ranges ranges Earth’s crust forms Earth’s crust forms First amphibians First amphibians First cells form First cells form First multicellular organisms form First multicellular organisms form First reptiles First reptiles Flowering plants evolve Flowering plants evolve Great Lakes formed during Ice Great Lakes formed during Ice Age Age Human Civilization Human Civilization Life found only in seas Life found only in seas Oceans form Oceans form Pangaea breaks up Pangaea breaks up Pangaea forms Pangaea forms Rockies form Rockies form Saber -toothed cats Saber -toothed cats Mammals are all small Mammals are all small Answer Key Atmosphere Forms</p><p>PC-Precambrian P- Group the descriptions from Oceans Form PC Paleozoic oldest to most recent Life only in Seas M-Mesozoic C-Cenozoic Age of Dinosaurs First Cells Age of Fish Multicellular Organisms Age of Mammals Appalachain Mtn. range begin to Age of Fish form First Amphibians Atmosphere forms Appalachain Mts P First birds Collisions of Laurasia and First Reptiles Evolve Gondwana form major mtn. ranges Collision of Eurasia and Gondwana Earth’s crust forms Pangaea Forms First amphibians Age of Dinosaurs First cells form First multicellular organisms form Mammals are all small First reptiles First Birds M Flowering plants evolve Great Lakes formed during Ice Pangaea Breaks Age Flowering Plants Human Civilization Age of Mammals Life found only in seas Oceans form Rockies form Pangaea breaks up Saber-toothed cats C Pangaea forms Great Lakes during ice age Rockies form Saber -toothed cats Human Civilization Mammals are all small Earth’s Crust</p>