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all geography including DSDP/ODP Sites and Legs
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Africa
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Congo (2)
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East Africa
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Glossopteris flora (7)
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Gnetales (3)
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Pteridospermae
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Callipteris (1)
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Neuropteris (6)
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problematic fossils (2)
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thallophytes (8)
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tracks (4)
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geochronology methods
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Ar/Ar (3)
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fission-track dating (2)
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K/Ar (2)
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optically stimulated luminescence (2)
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paleomagnetism (4)
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racemization (1)
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Sm/Nd (1)
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Sr/Sr (1)
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tree rings (19)
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U/Pb (8)
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geologic age
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Cenozoic
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Blancan (1)
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Koobi Fora Formation (1)
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lower Cenozoic (1)
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Quaternary
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Anglian (1)
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Holocene
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Atlantic (2)
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lower Holocene (2)
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Middle Ages (1)
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middle Holocene (2)
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Neoglacial
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Little Ice Age (1)
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Neolithic (1)
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upper Holocene
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Little Ice Age (1)
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Roman period (1)
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Mazama Ash (1)
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Pleistocene
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Irvingtonian (1)
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lower Pleistocene (2)
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middle Pleistocene (1)
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Presumpscot Formation (1)
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upper Pleistocene
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Devensian (1)
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Eemian (1)
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Rancholabrean (1)
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Sangamonian (1)
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Sartanian (1)
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Weichselian
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Loch Lomond Stade (1)
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upper Weichselian
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Allerod (3)
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Bolling (3)
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Younger Dryas (6)
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Wisconsinan
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middle Wisconsinan (1)
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upper Wisconsinan (2)
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upper Quaternary (7)
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Sirius Group (2)
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Siwalik System (1)
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Stone Age
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Neolithic (1)
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Tertiary
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Florissant Lake Beds (6)
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John Day Formation (1)
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lower Tertiary (4)
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Neogene
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Hemphillian (3)
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Miocene
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Ash Hollow Formation (4)
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Barstovian (2)
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Clarendonian (3)
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Ellensburg Formation (1)
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lower Miocene (5)
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middle Miocene
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Serravallian (1)
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upper Miocene
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Tortonian (1)
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Valentine Formation (2)
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Vallesian (1)
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Wanapum Basalt (1)
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Ogallala Formation (4)
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Pliocene
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Bowden Formation (1)
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lower Pliocene (3)
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upper Pliocene (4)
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Ringold Formation (1)
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Paleogene
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Eocene
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Avon Park Formation (1)
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Chuckanut Formation (1)
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Clarno Formation (1)
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Golden Valley Formation (1)
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Green River Formation (2)
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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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Claiborne Group (2)
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Santee Limestone (1)
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upper Eocene
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La Meseta Formation (2)
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Priabonian (1)
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Hanna Formation (1)
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Kenai Group (1)
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Oligocene
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Creede Formation (1)
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lower Oligocene
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Stampian (1)
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middle Oligocene (1)
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upper Oligocene
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Chattian (1)
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Vicksburg Group (1)
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Paleocene
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lower Paleocene
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Danian (3)
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K-T boundary (5)
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Puercan (1)
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Nanafalia Formation (1)
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Ravenscrag Formation (1)
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Tongue River Member (2)
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upper Paleocene
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Tiffanian (3)
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Paleocene-Eocene Thermal Maximum (1)
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Wasatch Formation (1)
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upper Tertiary (2)
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upper Cenozoic
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Ituzaingo Formation (1)
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Coal Measures (2)
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Laurentide ice sheet (1)
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Mesozoic
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Bisbee Group (1)
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Cretaceous
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Bahariya Formation (1)
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Comanchean
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Glen Rose Formation (1)
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Trinity Group (1)
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Dakota Formation (4)
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Lower Cretaceous
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Albian
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upper Albian (3)
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Aptian
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lower Aptian (1)
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Barremian (6)
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Cedar Mountain Formation (2)
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Cheyenne Sandstone (1)
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Glen Rose Formation (1)
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Hauterivian (1)
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Trinity Group (1)
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Valanginian (2)
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Wealden (1)
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Lower Greensand (1)
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Mancos Shale (1)
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Middle Cretaceous
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Winton Formation (1)
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Nanushuk Group (3)
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Potomac Group (5)
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Upper Cretaceous
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Campanian (3)
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Cenomanian
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lower Cenomanian (2)
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upper Cenomanian (1)
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Colville Group (3)
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Coniacian (2)
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Eutaw Formation (1)
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Fox Hills Formation (1)
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Fruitland Formation (1)
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Gulfian
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Aguja Formation (1)
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Hell Creek Formation (3)
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Horseshoe Canyon Formation (1)
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Kirtland Shale (2)
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K-T boundary (5)
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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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Laramie Formation (1)
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Maestrichtian (11)
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Magothy Formation (1)
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Ojo Alamo Sandstone (1)
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Prince Creek Formation (1)
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Raritan Formation (2)
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Rock Springs Formation (1)
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Santonian (3)
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Senonian (11)
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Turonian (4)
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Two Medicine Formation (1)
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Vraconian (1)
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Franciscan Complex (1)
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Jurassic
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Clarens Formation (1)
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Ladner Group (1)
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Lower Jurassic
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Hettangian (1)
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Pliensbachian (2)
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Toarcian (4)
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Triassic-Jurassic boundary (2)
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upper Liassic (1)
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Middle Jurassic
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Aalenian (2)
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Bajocian (1)
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Bathonian (2)
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Callovian (1)
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Dogger (1)
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Xishanyao Formation (1)
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Upper Jurassic
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Kimmeridgian (2)
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Morrison Formation (2)
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Oxfordian (2)
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Tithonian (1)
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Volgian (1)
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Khorat Group (1)
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Longarm Formation (1)
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Maiolica Limestone (1)
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Triassic
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Fremouw Formation (1)
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Lower Triassic
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Permian-Triassic boundary (9)
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Smithian (1)
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Spathian (1)
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Middle Triassic
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Anisian (1)
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Ladinian (1)
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Upper Triassic
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Carnian
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Ischigualasto Formation (2)
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Chinle Formation (3)
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Dockum Group (1)
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Keuper (1)
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Molteno Formation (2)
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Norian (3)
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Petrified Forest Member (1)
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Rhaetian (1)
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Stormberg Series (1)
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Triassic-Jurassic boundary (2)
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Xujiahe Formation (1)
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MIS 3 (1)
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MIS 5 (1)
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Paleozoic
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Carboniferous
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Lower Carboniferous
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Asbian (1)
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Dinantian (4)
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Mississippian
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Lower Mississippian
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Tournaisian (1)
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Middle Mississippian
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Visean
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upper Visean (1)
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Upper Mississippian
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Chesterian (1)
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Fayetteville Formation (1)
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Serpukhovian (4)
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Namurian (4)
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Pennsylvanian
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Brazil Formation (1)
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Conemaugh Group (1)
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Cumberland Group (1)
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Herrin Coal Member (4)
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Joggins Formation (5)
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Lower Pennsylvanian
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Caseyville Formation (1)
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Lee Formation (1)
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Mattoon Formation (1)
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Middle Pennsylvanian
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Carbondale Formation (2)
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Moscovian (4)
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Petersburg Formation (1)
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Staunton Formation (2)
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Springfield Coal Member (2)
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Upper Pennsylvanian
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Cisco Group (2)
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Gzhelian (2)
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Kasimovian (2)
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Missourian (1)
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Virgilian (1)
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Upper Carboniferous
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Stephanian (9)
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Westphalian (9)
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Devonian
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Lower Devonian (1)
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Middle Devonian
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Givetian (1)
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Upper Devonian
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Famennian (2)
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Frasnian (1)
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Permian
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Blaine Formation (1)
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Ecca Group (1)
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Gharif Formation (1)
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Guadalupian
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Roadian (1)
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Wordian (1)
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Illawarra Coal Measures (1)
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Khuff Formation (1)
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Lower Permian
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Al Khlata Formation (1)
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Autunian (1)
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Cisuralian
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Artinskian (1)
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Asselian (1)
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Kungurian (1)
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Leonardian
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Clear Fork Group (2)
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Middle Permian (3)
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Newcastle Coal Measures (1)
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Rio Bonito Formation (1)
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Saxonian (1)
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Upper Permian
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Kazanian (1)
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Lopingian (1)
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Permian-Triassic boundary (9)
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Zechstein (1)
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Silurian (2)
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upper Paleozoic
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Dwyka Formation (1)
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Fountain Formation (1)
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Phanerozoic (5)
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Precambrian
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upper Precambrian
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Proterozoic
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Paleoproterozoic (1)
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igneous rocks