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Ammonoids | Amphibians | Belemnoids | Brachiopods | Eurypterids |
Frogs and toads | Paleozoic | Cambrian | Ordovician | Silurian |
Devonian | Carboniferous | Permian | Mesozoic | Triassic |
Jurassic | Cretaceous | Cenozoic | Paleogene | Neogene |
Quaternary | Graptolites | Ichthyosauromorphs | Lepidosaurs | Mosasaurs |
Paleobotany | Paleontology | Prehistory of Africa | Prehistory of North America | Prehistory of South America |
Prehistory of Antarctica | Prehistory of Asia | Prehistory of Europe | Prehistory of Oceania | Pseudosuchians |
Pterosaurs | Reptiles | Salamanders | Sauropterygians | Snakes |
Trace fossils | Trilobites | |||