Prehistoric Life Prehistoric Secrets in Stone The Earliest Fossils The Silurian Reef Trilobites Fish The Coal Forests Early Reptiles and Amphibians Sea Reptiles Flying Reptiles The Teeming Seas Hunting Dinosaurs Biggest Dinosaurs Two-Footed Plant Eaters Plated and Armoured Dinosaurs Horned Dinosaurs The Mammal Age Dawns Grassland Mammals The Ice Age	Choose a Page:FishFish Head ShieldsFossil FishFish BedBone Bed*Nodule*Lake DepositShark TeethFish to Amphibian Nodule A dead fish might become encrusted to form a mineral nodule. Many fish fossils are found by splitting open such nodules.   Previous: Back Book: Prehistoric Life Section: Prehistoric Chapter: Fish