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all geography including DSDP/ODP Sites and Legs
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Insecta (3)
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Brachiopoda
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Articulata
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Inarticulata (2)
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Echinodermata
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Cephalopoda
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Vermes
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Plantae
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Filicopsida
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Spermatophyta
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Oligocene (5)
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K-T boundary (4)
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Dalradian (2)
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Franciscan Complex (2)
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Bunter
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Permian-Triassic boundary (3)
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Paleozoic
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Upper Carboniferous
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Casper Formation (1)
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Chattanooga Shale (1)
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Old Red Sandstone (1)
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Upper Devonian
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Leduc Formation (1)
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Knox Group (1)
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lower Paleozoic
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middle Paleozoic (1)
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New Albany Shale (1)
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Upper Ordovician
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Ashgillian (3)
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Red River Formation (2)
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Permian
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Ecca Group (2)
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Lower Permian
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Qixia Formation (1)
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Lyons Sandstone (1)
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Permian-Triassic boundary (3)
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Sauk Sequence (1)
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Silurian
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Lockport Formation (1)
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Lower Silurian
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Tuscarora Formation (1)
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Middle Silurian (2)
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Niagaran (1)
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Tippecanoe Sequence (1)
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Dwyka Formation (1)
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Phanerozoic (807)
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Sinian
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igneous rocks
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minerals
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carbonates
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K-bentonite (1)
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rutile (2)
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phosphates
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framework silicates
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alkali feldspar
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K-feldspar (3)
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silica minerals
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orthosilicates
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zircon group
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sheet silicates
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Primary terms
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absolute age (53)
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Africa
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Blue Nile (1)
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Central Africa
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Congo Democratic Republic (1)
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