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Mollusca
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Vermes
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Plantae
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Pteridophyta
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Sphenopsida
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Equisetales (1)
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Spermatophyta
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Angiospermae (1)
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Gymnospermae
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Coniferales (2)
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Cordaitales (1)
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Glossopteridales (1)
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Pteridospermae (4)
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problematic fossils
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problematic microfossils (1)
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tracks (4)
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trails (1)
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geochronology methods
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geologic age
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Anthropocene (1)
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Quaternary
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upper Pleistocene
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Wisconsinan
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upper Quaternary (3)
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Tertiary
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Arikaree Group (1)
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Neogene
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Miocene
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middle Miocene (2)
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upper Miocene
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Messinian (1)
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Pontian (1)
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-
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Pliocene
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lower Pliocene (1)
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-
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Paleogene
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Eocene
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Colton Formation (1)
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Green River Formation (3)
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Lake Gosiute (1)
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Lake Uinta (1)
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Parachute Creek Member (1)
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-
Flagstaff Formation (1)
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Oligocene
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Frio Formation (1)
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lower Oligocene
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Rupelian (1)
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upper Oligocene
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Chattian (1)
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-
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Paleocene
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lower Paleocene
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Danian (2)
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K-T boundary (5)
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Puercan (1)
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-
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Sinjar Formation (1)
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Wasatch Formation (1)
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White River Group (2)
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Wilcox Group (1)
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Coal Measures (1)
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Lake Bonneville (1)
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Laurentide ice sheet (1)
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Mesozoic
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Cretaceous
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Dakota Formation (1)
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Lower Cretaceous
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Albian
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upper Albian (1)
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Aptian
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Shuaiba Formation (1)
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Berriasian (2)
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Kiowa Formation (1)
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Middle Cretaceous (3)
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Natih Formation (1)
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Shiranish Formation (4)
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Upper Cretaceous
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Campanian
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upper Campanian (3)
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Cardium Formation (1)
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Carlile Shale (1)
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Cenomanian (3)
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Eutaw Formation (3)
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Ferron Sandstone Member (1)
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Fort Hays Limestone Member (2)
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K-T boundary (5)
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Maestrichtian
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lower Maestrichtian (2)
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Niobrara Formation (2)
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Santonian (5)
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Senonian (6)
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Turonian (2)
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Yezo Group (2)
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Glen Canyon Group (2)
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Great Valley Sequence (1)
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Jurassic
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Lower Jurassic
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Middle Jurassic
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San Rafael Group (1)
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Upper Jurassic
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Arab Formation (2)
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Hanifa Formation (2)
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Kimmeridgian
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upper Kimmeridgian (1)
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Morrison Formation (4)
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Oxfordian
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upper Oxfordian (1)
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Portlandian (1)
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Salt Wash Sandstone Member (1)
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Sundance Formation (1)
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Tithonian (2)
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Kayenta Formation (1)
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Navajo Sandstone (5)
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Triassic
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Lower Triassic (1)
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Upper Triassic
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Carnian (1)
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Wingate Sandstone (2)
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Yanshanian (1)
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Paleozoic
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Bird Spring Formation (1)
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Cambrian
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Lower Cambrian (2)
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Middle Cambrian
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Burgess Shale (1)
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Upper Cambrian (2)
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Carboniferous
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Lower Carboniferous
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Mississippian
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Lower Mississippian
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Lodgepole Formation (1)
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Madison Group (2)
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Upper Mississippian
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Meramecian
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Salem Limestone (3)
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Serpukhovian (1)
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Valmeyeran (1)
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Pennsylvanian
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Francis Creek Shale (1)
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Lower Pennsylvanian
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Bashkirian (1)
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Caseyville Formation (1)
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Crab Orchard Mountains Group (1)
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Gizzard Group (1)
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Morrowan
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Bloyd Formation (1)
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-
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Middle Pennsylvanian
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Atokan
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Atoka Formation (1)
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Carbondale Formation (2)
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Desmoinesian (2)
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Moscovian (3)
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Paradox Formation (1)
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Tradewater Formation (1)
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Upper Pennsylvanian
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Gzhelian (2)
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Kasimovian (1)
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Missourian
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Lansing Group (1)
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Virgilian
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Douglas Group (1)
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Lawrence Formation (1)
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Shawnee Group (1)
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Wabaunsee Group (1)
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-
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Upper Carboniferous
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Millstone Grit (1)
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Devonian
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Old Red Sandstone (1)
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lower Paleozoic (1)
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Ordovician
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Martinsburg Formation (1)
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Cincinnatian (1)
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Red River Formation (1)
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Yeoman Formation (1)
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Viola Limestone (1)
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Permian
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Council Grove Group (2)
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Cutler Formation (1)
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Guadalupian (1)
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Khuff Formation (3)
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Lower Permian
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Abo Formation (1)
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Cisuralian
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Asselian (3)
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Leonardian (3)
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Wichita Group (3)
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Middle Permian (2)
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Park City Formation (1)
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Phosphoria Formation (2)
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Upper Permian
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Zechstein (1)
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Sauk Sequence (1)
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Silurian
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Lower Silurian
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Llandovery
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Aeronian (1)
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Qalibah Formation (1)
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Wenlock (2)
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Middle Silurian (1)
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Upper Silurian
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Ludlow
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Ludfordian (1)
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Supai Formation (1)
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upper Paleozoic
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Admire Group (1)
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Fountain Formation (2)
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Phanerozoic (3)
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Precambrian
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Archean
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Gilman Formation (2)
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Opemisca Group (1)
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Roy Group (1)
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Hadean (1)
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upper Precambrian
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Proterozoic
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Mesoproterozoic
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Belt Supergroup (1)
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Newland Limestone (1)
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Neoproterozoic
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Dengying Formation (1)
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Doushantuo Formation (2)
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Ediacaran (2)
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Paleoproterozoic (2)
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Sinian
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Dengying Formation (1)
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Doushantuo Formation (2)
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igneous rocks
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igneous rocks
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carbonatites (1)
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plutonic rocks
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volcanic rocks
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pyroclastics
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tuff (3)
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ophiolite (2)
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volcanic ash (2)
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metamorphic rocks
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schists
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ophiolite (2)
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meteorites
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iron meteorites (1)
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ureilite (1)
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chondrites
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Kainsaz Meteorite (1)
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ordinary chondrites (1)
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minerals
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carbonates
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calcite (3)
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rutile (1)
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phosphates
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silicates
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amphibole group
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pyroxene group
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orthopyroxene (1)
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wollastonite group
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framework silicates
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feldspar group
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alkali feldspar
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K-feldspar (2)
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silica minerals
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quartz (1)
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orthosilicates
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zircon group
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zircon (15)
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ring silicates
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tourmaline group (2)
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sheet silicates
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illite (1)
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mica group
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serpentine group (1)
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sulfates
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orpiment (1)
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tellurides
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hessite (1)
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Primary terms
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absolute age (21)
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Africa
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Kenya
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East Turkana Basin (1)
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North Africa
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Southern Africa
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South Africa
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Bushveld Complex (1)
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Limpopo South Africa (1)
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West Africa
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Ghana (1)
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Antarctica (2)
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Asia
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Central Asia
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Far East
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bacteria (5)
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carbon
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Caribbean region
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Cenozoic
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Tertiary
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Arikaree Group (1)
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Neogene
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Miocene
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middle Miocene (2)
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Messinian (1)
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Pliocene
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lower Pliocene (1)
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Paleogene
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Eocene
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Colton Formation (1)
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Green River Formation (3)
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Lake Gosiute (1)
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Lake Uinta (1)
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Parachute Creek Member (1)
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-
Flagstaff Formation (1)
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Oligocene
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Frio Formation (1)
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lower Oligocene
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Rupelian (1)
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-
upper Oligocene
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Chattian (1)
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-
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Paleocene
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lower Paleocene
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Danian (2)
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K-T boundary (5)
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Puercan (1)
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-
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Sinjar Formation (1)
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Wasatch Formation (1)
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Central America
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Chordata
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Labyrinthodontia
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Aves (2)
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Synapsida
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Therapsida
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climate change (9)
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construction materials
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Deep Sea Drilling Project
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IPOD
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Leg 77
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DSDP Site 537 (1)
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Leg 10
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DSDP Site 96 (1)
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deformation (17)
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Vermes
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rare earths
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