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Bryozoa (2)
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Cnidaria
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Anthozoa
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Zoantharia
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Rugosa (1)
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Echinodermata
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Echinozoa
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Echinoidea (1)
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Mollusca
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Bivalvia (2)
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Gastropoda (2)
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Porifera
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Stromatoporoidea (1)
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Protista
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Foraminifera
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Fusulinina
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Fusulinidae
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Triticites (1)
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Textulariina
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Ammodiscacea
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Astrorhizidae (1)
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Radiolaria (2)
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lichens (1)
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microfossils
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Conodonta (1)
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Fusulinina
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Fusulinidae
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Triticites (1)
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problematic microfossils (1)
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palynomorphs
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Dinoflagellata (1)
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miospores
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pollen (1)
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Plantae
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algae
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Chlorophyta
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Tasmanites (1)
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Coccolithophoraceae (2)
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diatoms (1)
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Rhodophyta
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Corallinaceae
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Lithothamnium (1)
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Pteridophyta
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Filicopsida (1)
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Spermatophyta
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Angiospermae (1)
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problematic fossils
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problematic microfossils (1)
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Pterobranchia (1)
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tracks (1)
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geochronology methods
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Ar/Ar (2)
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K/Ar (7)
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optical mineralogy (2)
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paleomagnetism (8)
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radiation damage (2)
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Sm/Nd (1)
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tephrochronology (2)
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U/Pb (6)
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uranium disequilibrium (2)
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geologic age
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Cenozoic
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Agbada Formation (2)
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Quaternary
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Holocene
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lower Holocene (1)
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Middle Ages (1)
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upper Holocene
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Roman period (3)
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middle Quaternary (1)
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Pleistocene
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Bandelier Tuff (1)
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Glasford Formation (1)
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Old Crow Tephra (1)
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upper Pleistocene
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Wisconsinan
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upper Wisconsinan (1)
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upper Quaternary (4)
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Tertiary
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Muddy Creek Formation (1)
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Neogene
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Miocene
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Antelope Shale (1)
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Guantao Formation (2)
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lower Miocene (2)
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middle Miocene
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Serravallian (1)
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Oficina Formation (2)
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Paintbrush Tuff (1)
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Surma Group (1)
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Tiva Canyon Member (1)
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Topopah Spring Member (1)
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upper Miocene
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Messinian (1)
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Mount Messenger Formation (2)
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Pliocene
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lower Pliocene (2)
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upper Pliocene (2)
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Paleogene
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Calvert Bluff Formation (1)
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Dongying Formation (3)
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Eocene
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Colton Formation (1)
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Green River Formation (3)
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lower Eocene
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Ypresian (1)
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middle Eocene
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Carrizo Sand (1)
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Lutetian (1)
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upper Eocene (2)
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Flagstaff Formation (1)
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Oligocene
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Boom Clay (1)
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Fontainebleau Sandstone (3)
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lower Oligocene (1)
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upper Oligocene (1)
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Paleocene
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lower Paleocene
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Danian (2)
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Tongue River Member (1)
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upper Paleocene (3)
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Wasatch Formation (2)
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Wilcox Group (1)
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Shahejie Formation (6)
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upper Cenozoic (1)
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Lake Bonneville (1)
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Mesozoic
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Cretaceous
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Colorado Group (2)
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Comanchean
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Buda Limestone (3)
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Edwards Formation (3)
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Georgetown Formation (1)
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Glen Rose Formation (2)
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Pearsall Formation (2)
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Dakota Formation (1)
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Lower Cretaceous
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Albian (2)
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Aptian
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lower Aptian (2)
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Shuaiba Formation (2)
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Barremian (1)
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Berriasian (2)
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Clearwater Formation (2)
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Crato Formation (1)
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Edwards Formation (3)
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Georgetown Formation (1)
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Glen Rose Formation (2)
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Hosston Formation (1)
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Mannville Group (5)
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McMurray Formation (6)
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Muddy Sandstone (1)
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Pearsall Formation (2)
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Purbeckian (1)
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Sligo Formation (1)
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Torok Formation (1)
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Valanginian (1)
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Wealden (1)
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Yingcheng Formation (1)
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Macae Formation (1)
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Mancos Shale (1)
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Middle Cretaceous (1)
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Nanushuk Group (2)
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Upper Cretaceous
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Almond Formation (1)
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Buda Limestone (3)
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Campanian
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lower Campanian (2)
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upper Campanian (1)
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Cardium Formation (1)
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Carlile Shale (1)
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Castlegate Sandstone (2)
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Cenomanian (4)
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Ferron Sandstone Member (5)
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Fort Hays Limestone Member (2)
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Frontier Formation (2)
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Fruitland Formation (1)
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Gallup Sandstone (1)
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Gulfian
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Austin Chalk (4)
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Eagle Ford Formation (9)
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Horseshoe Canyon Formation (1)
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Lewis Shale (1)
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Maestrichtian
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upper Maestrichtian (1)
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Mesaverde Group (3)
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Moreno Formation (1)
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Niobrara Formation (3)
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Oldman Formation (1)
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Pierre Shale (2)
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Santonian (1)
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Senonian (5)
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Sharon Springs Member (1)
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Smoky Hill Chalk Member (2)
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Straight Cliffs Formation (1)
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Tropic Shale (1)
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Turonian
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lower Turonian (1)
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upper Turonian (1)
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Tuscaloosa Formation (1)
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Wahweap Formation (1)
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Williams Fork Formation (1)
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Viking Formation (1)
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Great Valley Sequence (1)
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Jurassic
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Aztec Sandstone (1)
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Heather Formation (1)
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Kingak Shale (1)
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Lower Jurassic (1)
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Middle Jurassic
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Bajocian
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Brent Group (3)
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Etive Formation (1)
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Ness Formation (2)
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Rannoch Formation (1)
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Tarbert Formation (2)
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Bathonian (1)
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Callovian (2)
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Norphlet Formation (3)
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Posidonia Shale (1)
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Upper Jurassic
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Arab Formation (2)
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Bowser Lake Group (1)
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Cotton Valley Group (3)
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Fulmar Formation (1)
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Haynesville Formation (3)
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Kimmeridge Clay (2)
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Kimmeridgian (1)
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Oxfordian (2)
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Smackover Formation (4)
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Sundance Formation (1)
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Tithonian (1)
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Kayenta Formation (1)
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Statfjord Formation (1)
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Triassic
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Fremouw Formation (1)
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Lower Triassic (6)
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Middle Triassic
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Anisian (1)
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Doig Formation (2)
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Ladinian (1)
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Montney Formation (5)
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Sherwood Sandstone (3)
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Upper Triassic
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Sag River Sandstone (1)
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Xujiahe Formation (1)
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Yanchang Formation (7)
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upper Mesozoic (2)
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Vaca Muerta Formation (1)
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Yanshanian (3)
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Paleozoic
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Arbuckle Group (1)
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Berea Sandstone (2)
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Cambrian
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Lower Cambrian (4)
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Middle Cambrian (1)
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Upper Cambrian
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Copper Ridge Dolomite (1)
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Eau Claire Formation (3)
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Mount Simon Sandstone (5)
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Potsdam Sandstone (1)
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Carboniferous
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Bartlesville Sand (1)
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Benxi Formation (1)
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Jackfork Group (1)
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Lower Carboniferous
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Dinantian (3)
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Mississippian
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Barnett Shale (7)
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Lower Mississippian
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Kayak Shale (1)
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Madison Group (3)
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Middle Mississippian
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Visean
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upper Visean (1)
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Mission Canyon Limestone (1)
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Price Formation (1)
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Upper Mississippian
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Chesterian
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Aux Vases Sandstone (1)
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Renault Formation (1)
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Serpukhovian (1)
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Windsor Group (1)
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Pennsylvanian
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Middle Pennsylvanian
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Atokan (2)
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Desmoinesian (1)
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Paradox Formation (1)
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Strawn Series (1)
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Upper Pennsylvanian
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Canyon Group (1)
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Cisco Group (2)
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Gzhelian (1)
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Missourian
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Kansas City Group (1)
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Lansing Group (1)
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Springer Formation (1)
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Upper Carboniferous
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Westphalian (1)
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Wahoo Limestone (1)
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Devonian
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Keg River Formation (1)
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Lower Devonian (2)
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Middle Devonian
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Hamilton Group (1)
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Mahantango Formation (2)
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Marcellus Shale (6)
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Onondaga Limestone (4)
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Tully Limestone (2)
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Slave Point Formation (1)
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Thirtyone Formation (1)
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Upper Devonian
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Brallier Shale (1)
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Famennian (1)
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Frasnian
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Leduc Formation (1)
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Grosmont Formation (2)
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Nisku Formation (1)
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Palliser Formation (1)
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Exshaw Formation (1)
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Horton Group (1)
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Hunton Group (2)
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