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Message * Fossil - Paleozoic animals Cambrian animals, Carboniferous animals, Devonian animals, Eurypterida, Ordovician animals, Permian animals, Silurian animals, Trilobites, Ammagnostidae, Archaeocyatha, Archaeopriapulida, Cambropallas, Elrathia, Halkieria, Klep - 1234838834 - 9781234838836