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all geography including DSDP/ODP Sites and Legs
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Plantae
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algae
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Chlorophyta
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Coccolithophoraceae (1)
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diatoms (4)
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nannofossils (1)
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Rhodophyta (4)
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Spermatophyta
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Angiospermae
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Dicotyledoneae
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Compositae (1)
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Monocotyledoneae
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Gymnospermae
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Coniferales
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Araucariaceae
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Cycadales (1)
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problematic fossils
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problematic microfossils
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Tubiphytes (1)
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prokaryotes (1)
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thallophytes (5)
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geochronology methods
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Ar/Ar (30)
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Lu/Hf (1)
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U/Pb (41)
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U/Th/Pb (4)
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uranium disequilibrium (1)
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geologic age
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Cenozoic
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Quaternary
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Holocene
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Pleistocene
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upper Pleistocene
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Wisconsinan
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upper Wisconsinan (1)
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upper Quaternary (3)
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Tertiary
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Anahuac Formation (1)
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Challis Volcanics (1)
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John Day Formation (2)
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lower Tertiary (2)
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Neogene
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Bone Valley Formation (1)
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Miocene
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Columbia River Basalt Group (5)
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Grande Ronde Basalt (1)
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lower Miocene
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Waitemata Group (1)
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middle Miocene (3)
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Paintbrush Tuff (1)
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upper Miocene
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Modelo Formation (1)
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Tortonian (1)
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Pliocene
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lower Pliocene (1)
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middle Pliocene (1)
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Paleogene
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Eocene
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Absaroka Supergroup (1)
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Chumstick Formation (3)
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Green River Formation (1)
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lower Eocene
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Willwood Formation (1)
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Wind River Formation (1)
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middle Eocene
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Aycross Formation (1)
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Swauk Formation (3)
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upper Eocene
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Cowlitz Formation (1)
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Kapuni Group (1)
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Oligocene
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Frio Formation (1)
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lower Oligocene (2)
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upper Oligocene (1)
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Paleocene (7)
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Sespe Formation (1)
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Wilcox Group (1)
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upper Cenozoic
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Pico Formation (1)
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Wildcat Group (1)
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Dalradian (2)
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Laurentide ice sheet (1)
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Mesozoic
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Antalya Complex (1)
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Cretaceous
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Comanchean
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Trinity Group (1)
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Kuskokwim Group (1)
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Lower Cretaceous
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Agrio Formation (1)
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Albian (1)
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Aptian (4)
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Barremian (1)
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Bluesky Formation (1)
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Candeias Formation (1)
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Gething Formation (2)
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Isachsen Formation (1)
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McMurray Formation (1)
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Muddy Sandstone (1)
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Neocomian (1)
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Pebble Shale (1)
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Torok Formation (1)
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Trinity Group (1)
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Middle Cretaceous (4)
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Nenjiang Formation (1)
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Qingshankou Formation (1)
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Queen Charlotte Group (1)
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Upper Cretaceous
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Bearpaw Formation (1)
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Campanian (1)
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Castlegate Sandstone (1)
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Cenomanian (1)
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Colville Group (1)
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Coniacian (1)
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Gallup Sandstone (2)
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Gulfian
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Eagle Ford Formation (1)
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Harebell Formation (1)
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La Luna Formation (1)
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Lameta Formation (1)
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Lance Formation (1)
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Maestrichtian (3)
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Mesaverde Group (2)
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Niobrara Formation (1)
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Senonian (2)
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Smoky Hill Chalk Member (1)
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Turonian (2)
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Yezo Group (1)
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Franciscan Complex (3)
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Great Valley Sequence (1)
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Jurassic
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Lower Jurassic (1)
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Middle Jurassic
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Bathonian (1)
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Upper Jurassic
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Bowser Lake Group (2)
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Galice Formation (1)
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Morrison Formation (1)
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Naknek Formation (1)
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Oxfordian (2)
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Portlandian (1)
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Smackover Formation (2)
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Sundance Formation (1)
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Tithonian (1)
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lower Mesozoic (1)
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McHugh Complex (1)
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Orocopia Schist (1)
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Triassic
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Lower Triassic
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Bunter (1)
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Induan (1)
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Permian-Triassic boundary (1)
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Shublik Formation (1)
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Upper Triassic
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Rhaetian
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Penarth Group (1)
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Yanchang Formation (1)
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upper Mesozoic (2)
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Vaca Muerta Formation (1)
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Moldanubian (1)
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Paleozoic
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Acatlan Complex (1)
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Berea Sandstone (1)
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Cambrian
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Acadian (1)
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Conasauga Group (1)
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Lower Cambrian
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Poleta Formation (1)
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Terreneuvian
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Fortunian (1)
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Yudoma Series (1)
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Middle Cambrian
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Burgess Shale (1)
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Semri Series (1)
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Upper Cambrian
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Bonneterre Formation (1)
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Furongian (1)
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Lamotte Sandstone (1)
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Orr Formation (1)
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Potsdam Sandstone (1)
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Carboniferous
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Albert Formation (1)
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Jackfork Group (1)
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Johns Valley Formation (3)
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Lower Carboniferous
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Dinantian (3)
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Middle Carboniferous (1)
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Mississippian
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Barnett Shale (1)
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Lower Mississippian
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Fort Payne Formation (1)
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Lodgepole Formation (1)
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Madison Group (2)
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Middle Mississippian
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Visean (2)
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Stanley Group (1)
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Upper Mississippian
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Mauch Chunk Formation (1)
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Meramecian (1)
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Tuscumbia Limestone (1)
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Pennsylvanian
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Freeport Formation (1)
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Lower Pennsylvanian (1)
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Middle Pennsylvanian
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Atokan
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Atoka Formation (1)
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Desmoinesian
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Cherokee Group (1)
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Upper Pennsylvanian (1)
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Upper Carboniferous
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Westphalian (1)
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Chattanooga Shale (1)
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Devonian
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Guilmette Formation (1)
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Keg River Formation (1)
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Lower Devonian
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Emsian (3)
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Gedinnian (1)
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Oriskany Sandstone (2)
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Middle Devonian
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Eifelian (2)
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Mahantango Formation (1)
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Marcellus Shale (2)
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Onondaga Limestone (1)
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Winnipegosis Formation (1)
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Old Red Sandstone (1)
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Swan Hills Formation (1)
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Upper Devonian
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Famennian
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upper Famennian (1)
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Frasnian
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Leduc Formation (1)
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Grosmont Formation (3)
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Hanson Creek Formation (1)
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Itarare Subgroup (1)
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Keyser Limestone (1)
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Knox Group (1)
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lower Paleozoic
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Cape Phillips Formation (1)
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Madera Formation (1)
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Ordovician
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Eureka Quartzite (2)
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Lower Ordovician
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Arenigian (1)
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Beekmantown Group (2)
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El Paso Group (1)
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Saint George Group (1)
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Tremadocian (1)
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Martinsburg Formation (1)
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Middle Ordovician
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Chazy Group (1)
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Darriwilian (1)
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Saint Peter Sandstone (3)
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Simpson Group (1)
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Montoya Group (1)
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Skiddaw Slates (1)
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Upper Ordovician
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Ashgillian (1)
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Caradocian (1)
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Katian (1)
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Red River Formation (1)
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Valmy Formation (1)
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Vinini Formation (1)
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Permian
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Blaine Formation (1)
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Guadalupian
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Bell Canyon Formation (1)
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Brushy Canyon Formation (1)
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Capitan Formation (1)
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Cherry Canyon Formation (1)
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Delaware Mountain Group (2)
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Roadian (1)
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Kaibab Formation (2)
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Lower Permian
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Barakar Stage (1)
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Cherry Canyon Formation (1)
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Cisuralian
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Kungurian (1)
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Leonardian
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Bone Spring Limestone (1)
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Wolfcampian (1)
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Middle Permian (2)
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Phosphoria Formation (1)
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Toroweap Formation (1)
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Upper Permian
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Permian-Triassic boundary (1)
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Rangeley Formation (1)
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Silurian
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Lockport Formation (1)
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Lower Silurian
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Llandovery (1)
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Wenlock (1)
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Middle Silurian
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Clinton Group (1)
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Roberts Mountains Formation (1)
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Rochester Formation (1)
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Niagaran (2)
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Upper Silurian
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Cayugan
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Tonoloway Limestone (1)
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Ludlow (3)
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Pridoli (1)
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Supai Formation (1)
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Tensleep Sandstone (1)
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upper Paleozoic
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Arkansas Novaculite (1)
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Kaskaskia Sequence (1)
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Weber Sandstone (1)
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Wells Formation (1)
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Phanerozoic (2)
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Precambrian
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Animikie Group (1)
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