What story do the fossil remains of ancient organisms-from trilobites to Tyrannosaurus-tell about how life evolved on Earth?

General[25] History of Paleontology People[4] Tools and Methods[7] Expeditions[4] Evolution[1] Cladistics[3]	Fossil Amphibians and Reptiles Fossil Dinosaurs and Birds[27] Fossil Invertebrates[2] Fossil Mammals[3] Fossil Fish Micropaleontology