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Planolites (1)
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Rhizocorallium (1)
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Thalassinoides (1)
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Invertebrata
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Archaeocyatha (1)
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Arthropoda
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Mandibulata
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Crustacea
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Branchiopoda (1)
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Malacostraca (3)
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Ostracoda
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Leperditicopida (1)
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Podocopida
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Cypridocopina
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Cyprididae (1)
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Insecta
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Pterygota
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Neoptera
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Endopterygota
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Diptera (2)
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Hymenoptera (1)
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Trichoptera (1)
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Exopterygota
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Hemiptera (1)
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Myriapoda (1)
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Trilobitomorpha
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Trilobita
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Corynexochida (1)
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Redlichiida (1)
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Brachiopoda
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Articulata
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Rhynchonellida (1)
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Spiriferida
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Spiriferidina
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Spiriferidae (1)
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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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Tabulata (1)
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Echinodermata
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Crinozoa
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Crinoidea (2)
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Echinozoa
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Echinoidea (1)
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Helicoplacoidea (1)
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Mollusca
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Bivalvia
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Glycymeris (1)
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Heterodonta
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Rudistae (1)
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Nuculanidae (1)
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Cephalopoda
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Ammonoidea (1)
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Gastropoda
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Turritellidae (1)
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Polyplacophora (2)
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Scaphopoda (1)
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Porifera
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Demospongea
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Chaetetida
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Chaetetidae (1)
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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 (1)
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Miliolina
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Miliolacea
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Miliolidae (1)
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Rotaliina
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Buliminacea
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Bolivinitidae
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Bolivina (1)
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Globigerinacea
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Neogloboquadrina
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Neogloboquadrina pachyderma (1)
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Rotaliacea
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Ammonia
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Ammonia beccarii (1)
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Textulariina
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Lituolacea
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Trochammina (3)
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-
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Radiolaria (3)
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Thecamoeba (3)
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Vermes (2)
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Metazoa (2)
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microfossils
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Charophyta (1)
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Conodonta (6)
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Fusulinina
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Fusulinidae (1)
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Leperditicopida (1)
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problematic microfossils (4)
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palynomorphs
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acritarchs (3)
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Dinoflagellata (3)
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miospores
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pollen (6)
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Plantae
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algae
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Chlorophyta
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Charophyta (1)
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diatoms (5)
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nannofossils (1)
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Bryophyta (2)
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Spermatophyta
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Gymnospermae
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Coniferales
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Picea (1)
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Pteridospermae (1)
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problematic fossils
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problematic microfossils (4)
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thallophytes (1)
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tracks (5)
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geochronology methods
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(U-Th)/He (11)
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Ar/Ar (41)
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exposure age (5)
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fission-track dating (5)
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He/He (2)
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infrared stimulated luminescence (7)
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K/Ar (6)
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Lu/Hf (3)
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optically stimulated luminescence (4)
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paleomagnetism (19)
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Pb/Pb (1)
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Rb/Sr (1)
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Re/Os (1)
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Sm/Nd (2)
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Sr/Sr (1)
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tephrochronology (8)
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Th/U (5)
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thermochronology (16)
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U/Pb (65)
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U/Th/Pb (3)
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uranium disequilibrium (4)
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geologic age
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Cenozoic
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Blancan (6)
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Glenns Ferry Formation (2)
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Koobi Fora Formation (1)
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lower Cenozoic (2)
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middle Cenozoic (1)
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Omo Group (1)
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Quaternary
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Cordilleran ice sheet (1)
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Holocene
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lower Holocene (3)
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Middle Ages (1)
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middle Holocene (2)
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Neoglacial (1)
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upper Holocene (18)
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Mazama Ash (1)
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Pleistocene
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Bishop Tuff (3)
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Champlain Sea (1)
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Illinoian (1)
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Irvingtonian (1)
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lower Pleistocene
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Gelasian (1)
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middle Pleistocene (1)
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upper Pleistocene
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Devensian
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upper Devensian (1)
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Weichselian
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upper Weichselian
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Allerod (1)
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Bolling (1)
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Younger Dryas (2)
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Wisconsinan (2)
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upper Quaternary (16)
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Shungura Formation (1)
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Stone Age
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Paleolithic (1)
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Tertiary
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Asmari Formation (1)
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Climax Porphyry (1)
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John Day Formation (1)
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Lincoln Creek Formation (1)
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lower Tertiary (3)
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middle Tertiary
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Soda Lake Shale Member (1)
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Muddy Creek Formation (2)
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Neogene
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Bidahochi Formation (1)
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Furnace Creek Formation (1)
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Hemphillian (3)
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Miocene
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Barstovian (2)
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Barstow Formation (4)
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Clarendonian (1)
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Columbia River Basalt Group (6)
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Crater Flat Tuff (1)
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Grande Ronde Basalt (3)
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lower Miocene
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Aquitanian (1)
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Saucesian (1)
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middle Miocene
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Luisian (1)
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Mohnian (1)
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Paintbrush Tuff (1)
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Peach Springs Tuff (3)
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Relizian (1)
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Saddle Mountains Basalt (2)
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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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Puente Formation (5)
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Punchbowl Formation (2)
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Santa Margarita Formation (1)
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Wanapum Basalt (1)
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Ogallala Formation (1)
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Pliocene
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lower Pliocene (5)
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upper Pliocene
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Rexroad Formation (1)
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Paleogene
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Calvert Bluff Formation (1)
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Eocene
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Absaroka Supergroup (1)
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Chuckanut Formation (1)
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Cozy Dell Formation (2)
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lower Eocene (3)
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Matilija Formation (1)
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middle Eocene
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Carrizo Sand (1)
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upper Eocene
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Chadronian (2)
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Priabonian (1)
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Tejon Formation (1)
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Hanna Formation (1)
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Oligocene
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lower Oligocene (1)
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upper Oligocene
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Chattian (1)
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Paleocene
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lower Paleocene
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K-T boundary (1)
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Puercan (1)
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Torrejonian (1)
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Nacimiento Formation (2)
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Paleocene-Eocene Thermal Maximum (1)
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Sespe Formation (4)
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White River Group (1)
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Wilcox Group (2)
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Vaqueros Formation (2)
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upper Cenozoic
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Pico Formation (4)
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Lake Bonneville (1)
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Mesozoic
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Cretaceous
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Chatsworth Formation (1)
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Dakota Formation (1)
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Graneros Shale (1)
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Lower Cretaceous
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Albian (1)
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Aptian
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Shuaiba Formation (1)
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Barremian (1)
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Berriasian (2)
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Burro Canyon Formation (1)
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Cedar Mountain Formation (2)
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Mowry Shale (1)
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Middle Cretaceous (5)
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Santana Formation (1)
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Upper Cretaceous
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Almond Formation (1)
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Campanian (3)
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Carlile Shale (1)
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Cenomanian (1)
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Codell Sandstone Member (1)
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Coniacian (1)
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Edmonton Group (1)
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Forbes Formation (1)
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Frontier Formation (1)
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Greenhorn Limestone (1)
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Hornbrook Formation (2)
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Javelina Formation (1)
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K-T boundary (1)
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Maestrichtian
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upper Maestrichtian (1)
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Moreno Formation (3)
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Niobrara Formation (3)
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Ojo Alamo Sandstone (2)
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Oldman Formation (1)
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Pierre Shale (2)
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Senonian (5)
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Shannon Sandstone Member (1)
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Smoky Hill Chalk Member (1)
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Tuolumne Intrusive Suite (2)
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Turonian
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middle Turonian (1)
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Franciscan Complex (12)
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Glen Canyon Group (2)
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Great Valley Sequence (13)
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Jurassic
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Aztec Sandstone (1)
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Carmel Formation (1)
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Coast Range Ophiolite (2)
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Lower Jurassic (4)
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Middle Jurassic
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Bathonian (1)
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Norphlet Formation (1)
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San Rafael Group (2)
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Smartville Complex (1)
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Solnhofen Limestone (1)
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Upper Jurassic
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Arab Formation (1)
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Galice Formation (1)
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Kimmeridgian (1)
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Morrison Formation (4)
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Portlandian (1)
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Smackover Formation (1)
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Tithonian (3)
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-
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Kayenta Formation (2)
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Kunga Group (1)
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lower Mesozoic (1)
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Navajo Sandstone (3)
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Orocopia Schist (3)
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Triassic
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Liard Formation (1)
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Lower Triassic
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Induan (1)
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Permian-Triassic boundary (3)
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Smithian (1)
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Spathian (2)
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Werfenian (1)
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Middle Triassic (1)
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