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Illinois
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Indiana
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Iowa
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Kansas
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Hugoton Field (7)
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Kentucky
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Louisiana
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Maine
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Maryland
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Massachusetts
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Michigan
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Michigan Upper Peninsula
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Keweenaw County Michigan
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Midcontinent (116)
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Minnesota
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Mississippi
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Columbus Air Force Base (1)
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Missouri
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Saint Louis County Missouri
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Stoddard County Missouri (1)
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Montana
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Nebraska
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Nevada
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New Mexico
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New York
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North Carolina
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North Dakota
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Ogallala Aquifer (4)
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Ohio
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Oklahoma
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Oregon
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Pennsylvania
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South Carolina
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South Dakota
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Tennessee
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Texas
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Amarillo Uplift (2)
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ichnofossils
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Arenicolites (7)
-
Chondrites ichnofossils (6)
-
Cruziana (7)
-
Glossifungites (2)
-
Nereites (4)
-
Ophiomorpha
-
Ophiomorpha nodosa (1)
-
-
Palaeophycus (7)
-
Planolites (6)
-
Rhizocorallium (3)
-
Rusophycus (3)
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Skolithos (5)
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Thalassinoides (6)
-
Trypanites (1)
-
Zoophycos (8)
-
-
Invertebrata
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Archaeocyatha (10)
-
Arthropoda
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Chelicerata
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Arachnida (5)
-
Merostomata
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Eurypterida (11)
-
Xiphosura (6)
-
-
-
Mandibulata
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Crustacea
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Branchiopoda (8)
-
Cirripedia (4)
-
Malacostraca
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Amphipoda (1)
-
Brachyura (17)
-
-
Ostracoda
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Leperditicopida (2)
-
Myodocopida
-
Myodocopina (1)
-
-
Paleocopida (3)
-
Podocopida
-
Bairdiomorpha
-
Bairdiacea
-
Bairdiidae
-
Bairdia (6)
-
-
-
-
Cavellinidae (1)
-
Cypridocopina (3)
-
Cytherocopina
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Cytheracea
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Cyprideis (3)
-
Cytheridae (2)
-
Loxoconcha (1)
-
Trachyleberididae (2)
-
-
-
Healdiidae (2)
-
Platycopida
-
Cytherellidae
-
Cytherella (1)
-
Cytherelloidea (2)
-
-
-
-
-
-
Insecta
-
Pterygota
-
Neoptera
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Endopterygota
-
Coleoptera (10)
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Diptera (2)
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Hymenoptera (6)
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Mecoptera (1)
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Neuroptera (1)
-
-
Exopterygota
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Blattaria (1)
-
Hemiptera
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Heteroptera (1)
-
-
Orthoptera (1)
-
Psocoptera (1)
-
Thysanoptera (1)
-
-
Orthopteroida (1)
-
-
Palaeoptera
-
Odonata (2)
-
-
-
-
Myriapoda (7)
-
-
Trilobitomorpha
-
Trilobita
-
Agnostida (12)
-
Corynexochida (11)
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Lichida (3)
-
Phacopida
-
Phacopina
-
Phacops (2)
-
-
-
Ptychopariida
-
Asaphidae (3)
-
Olenidae (6)
-
Proetidae (4)
-
-
Redlichiida (12)
-
-
-
-
Brachiopoda
-
Articulata
-
Orthida (9)
-
Pentamerida (7)
-
Productida (9)
-
Rhynchonellida
-
Rhynchonellidae (3)
-
-
Spiriferida
-
Atrypidae (4)
-
Cyrtospirifer (2)
-
Spiriferidina
-
Spiriferidae (2)
-
-
-
Strophomenida
-
Sowerbyella (1)
-
Strophomena (1)
-
-
Terebratulida
-
Terebratulidae (1)
-
Terebratulina (2)
-
-
Thecideidina
-
Thecideidae (1)
-
-
-
Inarticulata
-
Lingula (5)
-
-
-
Bryozoa
-
Cheilostomata (14)
-
Cryptostomata
-
Fenestellidae (2)
-
Rhabdomesidae (1)
-
-
Cystoporata (4)
-
Trepostomata (11)
-
-
Cnidaria
-
Anthozoa
-
Octocorallia (3)
-
Zoantharia
-
Rugosa (25)
-
Scleractinia
-
Acropora (1)
-
Montastrea (2)
-
Porites (1)
-
-
Tabulata (8)
-
-
-
Hydrozoa (5)
-
Scyphozoa
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Conulariida (8)
-
-
-
Echinodermata
-
Asterozoa
-
Stelleroidea
-
Asteroidea (18)
-
Ophiuroidea (8)
-
Somasteroidea (2)
-
-
-
Crinozoa
-
Blastoidea (10)
-
Crinoidea
-
Inadunata (1)
-
-
Cystoidea (3)
-
Eocrinoidea (7)
-
-
Echinozoa
-
Cyclocystoidea (2)
-
Echinoidea (21)
-
Edrioasteroidea (7)
-
Helicoplacoidea (1)
-
Holothuroidea (2)
-
-
Homalozoa
-
Homoiostelea (3)
-
Homostelea (1)
-
Stylophora (8)
-
-
-
Mollusca
-
Bivalvia
-
Arcidae (1)
-
Carbonicola (1)
-
Glycymeris (1)
-
Heterodonta
-
Hippuritacea
-
Radiolitidae (2)
-
-
Rudistae (9)
-
Veneroida
-
Carditidae (2)
-
Veneridae (2)
-
-
-
Nuculanidae (3)
-
Ostreoidea
-
Gryphaea (1)
-
Ostreidae
-
Crassostrea
-
Crassostrea virginica (2)
-
-
-
-
Palaeoheterodonta
-
Trigoniidae (1)
-
-
Pholadomyoida (2)
-
Pterioida
-
Pteriina
-
Anthraconaia (1)
-
Inocerami
-
Inoceramidae
-
Inoceramus (2)
-
-
-
Pectinacea
-
Halobia (1)
-
Monotis (1)
-
Pectinidae (5)
-
-
-
-
Solemyida (2)
-
-
Cephalopoda
-
Ammonoidea
-
Ammonites (17)
-
Baculites (3)
-
Ceratitida (1)
-
Goniatitida
-
Goniatitidae
-
Goniatites (1)
-
-
-
Lytoceratida (1)
-
Phylloceratida (1)
-
Scaphites (3)
-
-
Bactritida (1)
-
Coleoidea
-
Belemnoidea
-
Belemnitidae (2)
-
-
-
Nautiloidea
-
Nautilus (3)
-
-
-
Dacryoconarida (1)
-
Gastropoda
-
Archaeogastropoda
-
Bellerophontina (1)
-
-
Harpidae (1)
-
Naticidae (1)
-
Neogastropoda
-
Muricidae (1)
-
-
Pulmonata (1)
-
Turritellidae
-
Turritella (1)
-
-
-
Hyolithes (14)
-
Monoplacophora (2)
-
Polyplacophora (7)
-
Rostroconchia (3)
-
Scaphopoda (4)
-
Tentaculitida
-
Tentaculitidae
-
Tentaculites (1)
-
-
-
-
Porifera
-
Calcarea
-
Sphinctozoa (1)
-
-
Demospongea
-
Chaetetida
-
Chaetetidae (2)
-
-
-
Hexactinellida (8)
-
Stromatoporoidea (19)
-
-
Protista
-
Foraminifera
-
Allogromiina (1)
-
Fusulinina
-
Fusulinidae
-
Schwagerina (2)
-
Triticites (5)
-
-
-
Miliolina
-
Miliolacea
-
Alveolinellidae
-
Alveolina (1)
-
-
Miliolidae (2)
-
-
-
Rotaliina
-
Buliminacea
-
Bolivinitidae
-
Bolivina (1)
-
-
Bulimina (2)
-
-
Cassidulinacea
-
Anomalinidae
-
Cibicidoides (1)
-
-
-
Globigerinacea
-
Globigerinidae
-
Globigerina (4)
-
Globigerinoides (2)
-
Sphaeroidinella (1)
-
-
Globorotaliidae
-
Globorotalia (3)
-
-
Globotruncanidae
-
Globotruncana (2)
-
-
Hantkenina (1)
-
Hedbergella (2)
-
Heterohelicidae (3)
-
Neogloboquadrina (1)
-
Rotalipora (2)
-
-
Lagenidae (4)
-
Nodosariacea
-
Nodosariidae
-
Lenticulina (3)
-
Nodosaria (4)
-
-
-
Orbitoidacea
-
Amphistegina (1)
-
Cibicides (2)
-
Lepidocyclina (2)
-
-
Rotaliacea
-
Ammonia (3)
-
Elphidium (1)
-
Heterostegina
-
Heterostegina depressa (1)
-
-
Miogypsinidae (1)
-
Nummulitidae
-
Nummulites
-
Operculina (2)
-
-
-
-
-
Textulariina
-
Lituolacea
-
Ammobaculites (1)
-
Lituolidae
-
Haplophragmoides (1)
-
-
Trochammina (4)
-
-
-
-
Radiolaria (29)
-
Silicoflagellata (1)
-
Thecamoeba (8)
-
-
Vermes
-
Annelida (12)
-
Chaetognatha (1)
-
Nematomorpha (1)
-
Phoronida (1)
-
Polychaeta
-
Serpulidae (2)
-
-
Priapulida (5)
-
scolecodonts (11)
-
-
-
lichens (1)
-
Metazoa (11)
-
microfossils
-
Charophyta (4)
-
Chitinozoa (7)
-
Conodonta
-
Adetognathus (1)
-
Hindeodus (1)
-
Idiognathodus (4)
-
Neognathodus (3)
-
Neogondolella (2)
-
Palmatolepis (2)
-
Polygnathus (1)
-
Streptognathodus (2)
-
-
Fusulinina
-
Fusulinidae
-
Schwagerina (2)
-
Triticites (5)
-
-
-
Leperditicopida (2)
-
problematic microfossils
-
Tubiphytes (1)
-
-
scolecodonts (11)
-
-
palynomorphs
-
acritarchs (18)
-
Chitinozoa (7)
-
Dinoflagellata (22)
-
megaspores (8)
-
miospores
-
pollen (40)
-
-
-
Plantae
-
algae
-
calcareous algae (6)
-
Chlorophyta
-
Botryococcus (1)
-
Charophyta (4)
-
Chlorophyceae
-
Codiaceae
-
Halimeda (1)
-
-
Dasycladaceae (2)
-
-
Tasmanites (1)
-
-
Chrysophyta (1)
-
Coccolithophoraceae
-
Coccolithus (1)
-
-
diatoms (10)
-
nannofossils
-
Discoasteridae (3)
-
-
Rhodophyta
-
Corallinaceae
-
Lithophyllum (1)
-
Lithothamnium (1)
-
-
-
-
Pteridophyta
-
Filicopsida
-
Archaeopteris (1)
-
-
Lycopsida
-
Lepidodendron (1)
-
Sigillaria (1)
-
-
Sphenopsida
-
Equisetales
-
Calamites (1)
-
-
-
-
Spermatophyta
-
Angiospermae
-
Dicotyledoneae
-
Salix (1)
-
-
Monocotyledoneae
-
Gramineae (2)
-
Palmae (1)
-
-
-
Gymnospermae
-
Bennettitales (1)
-
Coniferales
-
Pinaceae
-
Pinus (2)
-
-
-
Cordaitales
-
Cordaites (1)
-
-
Cycadales (2)
-
Ginkgoales (2)
-
Glossopteridales
-
Glossopteris
-
Glossopteris flora (1)
-
-
-
Pteridospermae (9)
-
-
-
-
problematic fossils
-
problematic microfossils
-
Tubiphytes (1)
-
-
-
prokaryotes (2)
-
Pterobranchia (5)
-
thallophytes (14)
-
tracks (38)
-
trails (11)
-
-
geochronology methods
-
(U-Th)/He (24)
-
Ar/Ar (42)
-
exposure age (3)
-
fission-track dating (21)
-
infrared stimulated luminescence (1)
-
K/Ar (6)
-
Lu/Hf (7)
-
optically stimulated luminescence (9)
-
paleomagnetism (47)
-
Pb/Pb (4)
-
racemization (2)
-
radiation damage (1)
-
Rb/Sr (3)
-
Re/Os (5)
-
Sm/Nd (6)
-
Sr/Sr (2)
-
tephrochronology (6)
-
Th/U (5)
-
thermochronology (28)
-
thermoluminescence (1)
-
tree rings (1)
-
U/Pb (155)
-
U/Th/Pb (5)
-
uranium disequilibrium (1)
-
-
geologic age
-
Cenozoic
-
Blancan (11)
-
Bronze Age (1)
-
Glenns Ferry Formation (4)
-
lower Cenozoic (1)
-
middle Cenozoic (1)
-
Quaternary
-
Clovis (1)
-
Cordilleran ice sheet (1)
-
Holocene
-
lower Holocene (6)
-
Medieval Warm Period (1)
-
middle Holocene (2)
-
Neoglacial (1)
-
upper Holocene
-
Roman period (1)
-
-
-
lower Quaternary (1)
-
Pleistocene
-
Blackwater Draw Formation (3)
-
Illinoian (2)
-
Irvingtonian (3)
-
Kansan (1)
-
Lake Lahontan (1)
-
Loveland Loess (2)
-
lower Pleistocene
-
Calabrian (1)
-
Gelasian (1)
-
-
Matuyama Chron (1)
-
Miami Limestone (1)
-
middle Pleistocene (2)
-
Peoria Loess (3)
-
upper Pleistocene
-
Lake Iroquois (1)
-
Rancholabrean (2)
-
Sangamonian (2)
-
Weichselian
-
upper Weichselian
-
Younger Dryas (5)
-
-
-
Wisconsinan
-
upper Wisconsinan (6)
-
-
-
-
upper Quaternary
-
Brunhes Chron (2)
-
-
-
Siwalik System (1)
-
Stone Age
-
Paleolithic (1)
-
-
Tertiary
-
Arikaree Group (2)
-
Arikareean (1)
-
Asmari Formation (2)
-
Catahoula Formation (1)
-
Florissant Lake Beds (2)
-
John Day Formation (2)
-
Lincoln Creek Formation (2)
-
lower Tertiary (3)
-
Muddy Creek Formation (2)
-
Neogene
-
Bidahochi Formation (3)
-
Hemphillian (8)
-
Miocene
-
Ash Hollow Formation (3)
-
Astoria Formation (1)
-
Barstovian (2)
-
Barstow Formation (3)
-
Clarendonian (3)
-
Columbia River Basalt Group (4)
-
lower Miocene
-
Burdigalian (3)
-
-
middle Miocene
-
Langhian (1)
-
-
Ngorora Formation (1)
-
Oficina Formation (1)
-
Picture Gorge Basalt (1)
-
Puerto Madryn Formation (2)
-
Saddle Mountains Basalt (1)
-
Sarmatian (1)
-
Surma Group (1)
-
upper Miocene
-
Messinian
-
Messinian Salinity Crisis (1)
-
-
Puente Formation (1)
-
Santa Margarita Formation (1)
-
Tortonian (4)
-
-
Yakima Basalt (1)
-
-
Ogallala Formation (9)
-
Pliocene
-
Citronelle Formation (1)
-
Hadar Formation (1)
-
lower Pliocene
-
Zanclean (2)
-
-
upper Pliocene
-
Chowan River Formation (1)
-
Rexroad Formation (1)
-
-
Yorktown Formation (2)
-
-
Ringold Formation (1)
-
upper Neogene (2)
-
-
Paleogene
-
Barail Group (1)
-
Chadron Formation (1)
-
Eocene
-
Absaroka Supergroup (1)
-
Ameki Formation (1)
-
Bracklesham Group (1)
-
Bridgerian (1)
-
Castle Hayne Limestone (2)
-
Chuckanut Formation (1)
-
Crescent Formation (1)
-
Flournoy Formation (2)
-
Ghazij Formation (1)
-
Green River Formation (7)
-
Lake Gosiute (1)
-
Lookingglass Formation (1)
-
lower Eocene
-
Sparnacian (1)
-
Willwood Formation (5)
-
Ypresian
-
London Clay (2)
-
-
-
middle Eocene
-
Bartonian (4)
-
Claiborne Group (2)
-
Laney Shale Member (1)
-
Lutetian (3)
-
Santee Limestone (1)
-
Tallahatta Formation (1)
-
Tyee Formation (5)
-
-
Mirador Formation (1)
-
Nanjemoy Formation (2)
-
Parachute Creek Member (1)
-
Umpqua Formation (1)
-
upper Eocene
-
Chadronian (2)
-
Jackson Group (1)
-
Priabonian (2)
-
-
Wilkins Peak Member (1)
-
-
Hanna Formation (4)
-
Imo Shale (1)
-
lower Paleogene (4)
-
Ocala Group (1)
-
Oligocene
-
Brule Formation (1)
-
Glendon Limestone (1)
-
lower Oligocene
-
Rupelian (3)
-
-
middle Oligocene (1)
-
Suwannee Limestone (1)
-
upper Oligocene
-
Chattian (4)
-
-
Vicksburg Group (1)
-
-
Paleocene
-
lower Paleocene
-
Danian
-
Niniyur Group (1)
-
-
K-T boundary (16)
-
Puercan (4)
-
Torrejonian (4)
-
-
Ludlow Member (1)
-
middle Paleocene
-
Selandian (1)
-
-
Nacimiento Formation (2)
-
Ravenscrag Formation (2)
-
Tongue River Member (1)
-
Tullock Member (2)
-
upper Paleocene
-
Thanetian (2)
-
Tiffanian (5)
-
-
-
Paleocene-Eocene Thermal Maximum (5)
-
Renova Formation (1)
-
Sespe Formation (1)
-
Wasatch Formation (3)
-
White River Group (7)
-
Wilcox Group (5)
-
-
Pirabas Formation (1)
-
Shahejie Formation (3)
-
Sobral Formation (1)
-
upper Tertiary (2)
-
-
Tulare Formation (1)
-
upper Cenozoic
-
Karewa Group (1)
-
-
-
Coal Measures (1)
-
Dalradian (1)
-
Lake Bonneville (3)
-
Laurentide ice sheet (8)
-
Mesozoic
-
Cretaceous
-
Alisitos Formation (1)
-
Bahariya Formation (2)
-
Blairmore Group (1)
-
Colorado Group (9)
-
Comanchean
-
Buda Limestone (4)
-
Edwards Formation (2)
-
Georgetown Formation (1)
-
Glen Rose Formation (3)
-
Travis Peak Formation (1)
-
Trinity Group (2)
-
Washita Group (2)
-
-
Dakota Formation (16)
-
Graneros Shale (2)
-
Hue Shale (1)
-
Lower Cretaceous
-
Agrio Formation (5)
-
Albian
-
lower Albian (2)
-
upper Albian (11)
-
-
Aptian
-
Shuaiba Formation (2)
-
-
Barremian (15)
-
Bear River Formation (2)
-
Berriasian (2)
-
Blackleaf Formation (2)
-
Cadomin Formation (1)
-
Cedar Mountain Formation (10)
-
Cheyenne Sandstone (3)
-
Christopher Formation (2)
-
Clearwater Formation (3)
-
Cloverly Formation (2)
-
Cupido Formation (1)
-
Edwards Formation (2)
-
Fall River Formation (1)
-
Georgetown Formation (1)
-
Gething Formation (1)
-
Glen Rose Formation (3)
-
Hauterivian (6)
-
Isachsen Formation (1)
-
Kiowa Formation (3)
-
Mannville Group (6)
-
McMurray Formation (11)
-
Mowry Shale (5)
-
Muddy Sandstone (2)
-
Neocomian (2)
-
Newcastle Sandstone (2)
-
Skull Creek Shale (1)
-
Travis Peak Formation (1)
-
Trinity Group (2)
-
Urgonian (1)
-
Valanginian (7)
-
-
Mancos Shale (11)
-
Middle Cretaceous
-
Bhuj Series (1)
-
Winton Formation (1)
-
-
Natih Formation (1)
-
Nenjiang Formation (2)
-
Potomac Group (3)
-
Qingshankou Formation (1)
-
Queen Charlotte Group (2)
-
Santana Formation (3)
-
Upper Cretaceous
-
Bagh Beds (5)
-
Bearpaw Formation (8)
-
Belle Fourche Shale (3)
-
Belly River Formation (4)
-
Blackhawk Formation (4)
-
Bridge Creek Limestone Member (6)
-
Buda Limestone (4)
-
Campanian
-
Dinosaur Park Formation (12)
-
lower Campanian (8)
-
upper Campanian (11)
-
-
Cardium Formation (6)
-
Carlile Shale (15)
-
Castlegate Sandstone (4)
-
Cenomanian
-
Dunvegan Formation (3)
-
lower Cenomanian (2)
-
upper Cenomanian (6)
-
-
Codell Sandstone Member (6)
-
Coniacian
-
lower Coniacian (1)
-
-
Demopolis Chalk (1)
-
Eagle Sandstone (1)
-
Edmonton Group (1)
-
Eutaw Formation (4)
-
Ferron Sandstone Member (6)
-
Fort Hays Limestone Member (5)
-
Fox Hills Formation (2)
-
Frontier Formation (5)
-
Gammon Ferruginous Member (2)
-
Greenhorn Limestone (20)
-
Gulfian
-
Aguja Formation (3)
-
Austin Chalk (4)
-
Austin Group (4)
-
Eagle Ford Formation (19)
-
Woodbine Formation (6)
-
-
Hell Creek Formation (6)
-
Hornbrook Formation (2)
-
Horseshoe Canyon Formation (5)
-
Javelina Formation (2)
-
Judith River Formation (4)
-
Kaiparowits Formation (1)
-
Kanguk Formation (2)
-
Kirtland Shale (1)
-
Kodiak Formation (1)
-
K-T boundary (16)
-
La Luna Formation (1)
-
Lameta Formation (1)
-
Lance Formation (4)
-
Laramie Formation (2)
-
Lewis Shale (3)
-
Maestrichtian
-
lower Maestrichtian (2)
-
upper Maestrichtian (5)
-
-
Maevarano Formation (2)
-
Marilia Formation (1)
-
Mesaverde Group (8)
-
Milk River Formation (3)
-
Montana Group (2)
-
Mooreville Chalk (2)
-
Moreno Formation (3)
-
Navesink Formation (1)
-
Niobrara Formation (34)
-
Oldman Formation (2)
-
Pakawau Group (1)
-
Pierre Shale (34)
-
Point Loma Formation (1)
-
Ripley Formation (1)
-
Rock Springs Formation (1)
-
Rosario Formation (4)
-
Saint Mary River Formation (1)
-
Santonian (24)
-
Selma Group (1)
-
Senonian (75)
-
Shannon Sandstone Member (1)
-
Sharon Springs Member (7)
-
Smoky Hill Chalk Member (7)
-
Straight Cliffs Formation (3)
-
Sussex Sandstone Member (1)
-
Tropic Shale (3)
-
Tununk Member (1)
-
Turonian
-
lower Turonian (8)
-
middle Turonian (4)
-
upper Turonian (2)
-
-
Tuscaloosa Formation (4)
-
Two Medicine Formation (5)
-
Wahweap Formation (1)
-
Williams Fork Formation (6)
-
Wyandot Formation (1)
-
-
Viking Formation (4)
-
Whitemud Formation (2)
-
Yacoraite Formation (1)
-
Yezo Group (1)
-
-
Franciscan Complex (3)
-
Jurassic
-
Carmel Formation (1)
-
Clarens Formation (1)
-
Lathi Formation (1)
-
Lower Jurassic
-
East Berlin Formation (1)
-
Hettangian (9)
-
lower Liassic (7)
-
middle Liassic (3)
-
Nordegg Member (2)
-
Pliensbachian (14)
-
Sinemurian (6)
-
Sunrise Formation (1)
-
Toarcian
-
lower Toarcian (4)
-
-
upper Liassic (2)
-
-
Middle Jurassic
-
Aalenian (1)
-
Bajocian (7)
-
Bathonian (11)
-
Callovian (10)
-
Dogger (2)
-
Page Sandstone (1)
-
Summerville Formation (1)
-
-
Norphlet Formation (2)
-
Oxford Clay (1)
-
Posidonia Shale (2)
-
Smartville Complex (1)
-
Solnhofen Limestone (1)
-
Upper Jurassic
-
Arab Formation (3)
-
Bossier Formation (1)
-
Brushy Basin Member (3)
-
Buckner Formation (2)
-
Cotton Valley Group (1)
-
Entrada Sandstone (3)
-
Hanifa Formation (2)
-
Haynesville Formation (1)
-
Kimmeridge Clay (3)
-
Kimmeridgian
-
upper Kimmeridgian (1)
-
-
Morrison Formation (12)
-
Oxfordian
-
lower Oxfordian (1)
-
middle Oxfordian (1)
-
upper Oxfordian (3)
-
-
Portlandian (9)
-
Schuler Formation (1)
-
Smackover Formation (5)
-
Sundance Formation (6)
-
Swift Formation (2)
-
Tithonian (17)
-
Volgian (3)
-
-
-
lower Mesozoic (5)
-
Maiolica Limestone (1)
-
McHugh Complex (1)
-
Mist Mountain Formation (1)
-
Moenave Formation (1)
-
Navajo Sandstone (4)
-
Newark Supergroup (3)
-
Nugget Sandstone (1)
-
Sandilands Formation (1)
-
Triassic
-
Charlie Lake Formation (3)
-
Cordevolian (1)
-
Fremouw Formation (2)
-
Hawkesbury Sandstone (1)
-
Liard Formation (4)
-
Lower Triassic
-
Bunter (1)
-
Dinwoody Formation (2)
-
Griesbachian (2)
-
Induan (1)
-
Olenekian (4)
-
Panchet Series (1)
-
Permian-Triassic boundary (36)
-
Scythian (3)
-
Smithian (6)
-
Spathian (5)
-
Thaynes Formation (2)
-
-
Middle Triassic
-
Anisian (18)
-
Doig Formation (5)
-
Ladinian (11)
-
Muschelkalk (3)
-
-
Moenkopi Formation (4)
-
Montney Formation (7)
-
Upper Triassic
-
Baldonnel Formation (2)
-
Carnian (17)
-
Chinle Formation (10)
-
Dockum Group (1)
-
Lockatong Formation (1)
-
Luning Formation (1)
-
Mercia Mudstone (1)
-
Norian (18)
-
Pardonet Formation (2)
-
Rhaetian
-
Penarth Group (1)
-
-
Shinarump Member (4)
-
Yanchang Formation (7)
-
-
-
upper Mesozoic
-
Yixian Formation (3)
-
-
Vaca Muerta Formation (7)
-
Yanshanian (1)
-
-
MIS 2 (1)
-
MIS 3 (1)
-
MIS 6 (1)
-
Paleozoic
-
Acatlan Complex (2)
-
Arbuckle Group (12)
-
Bird Spring Formation (3)
-
Cambrian
-
Carrara Formation (3)
-
Conasauga Group (2)
-
Lancara Formation (1)
-
Lower Cambrian
-
Atdabanian (1)
-
Chilhowee Group (1)
-
Kinzers Formation (1)
-
Poleta Formation (2)
-
Rome Formation (1)
-
Terreneuvian
-
Fortunian (2)
-
-
-
Middle Cambrian
-
Burgess Shale (16)
-
Marjum Formation (7)
-
Wheeler Formation (11)
-
Zhangxia Formation (1)
-
-
Pioche Shale (9)
-
Upper Cambrian
-
Bonneterre Formation (1)
-
Copper Ridge Dolomite (1)
-
Eau Claire Formation (1)
-
Furongian
-
Jiangshanian (1)
-
Paibian (3)
-
-
Lamotte Sandstone (3)
-
Mount Simon Sandstone (4)
-
Orr Formation (1)
-
Steptoean (6)
-
Wilberns Formation (2)
-
Wonewoc Formation (1)
-
-
-
Carboniferous
-
Amsden Formation (1)
-
Bartlesville Sand (4)
-
Benxi Formation (1)
-
Big Snowy Group (2)
-
Burbank Sand (3)
-
Ely Limestone (1)
-
Jackfork Group (3)
-
Johns Valley Formation (3)
-
Lower Carboniferous
-
Asbian (3)
-
Dinantian (28)
-
-
Middle Carboniferous (2)
-
Mississippian
-
Barnett Shale (15)
-
Boone Formation (6)
-
Borden Group (6)
-
Chainman Shale (1)
-
Harrodsburg Limestone (1)
-
Lower Mississippian
-
Cuyahoga Formation (3)
-
Fort Payne Formation (7)
-
Joana Limestone (1)
-
Kayak Shale (1)
-
Kinderhookian
-
Banff Formation (3)
-
-
Lake Valley Formation (6)
-
Lodgepole Formation (4)
-
Osagian
-
Burlington Limestone (9)
-
Keokuk Limestone (7)
-
-
Tournaisian
-
upper Tournaisian (1)
-
-
-
Madison Group (4)
-
Middle Mississippian
-
Visean
-
upper Visean (1)
-
-
-
Mission Canyon Limestone (1)
-
Price Formation (2)
-
Redwall Limestone (1)
-
Stanley Group (1)
-
Upper Mississippian
-
Bangor Limestone (1)
-
Chesterian
-
Cypress Sandstone (1)
-
Imo Formation (3)
-
-
Fayetteville Formation (9)
-
Greenbrier Limestone (2)
-
Hartselle Sandstone (2)
-
Heath Formation (4)
-
Meramecian
-
Saint Louis Limestone (4)
-
Sainte Genevieve Limestone (3)
-
Salem Limestone (1)
-
Warsaw Formation (3)
-
-
Pitkin Limestone (1)
-
Serpukhovian (10)
-
-
Valmeyeran (2)
-
Windsor Group (1)
-
-
Namurian (6)
-
Pennsylvanian
-
Brazil Formation (1)
-
Conemaugh Group (4)
-
Hermosa Group (3)
-
Joggins Formation (3)
-
Lower Pennsylvanian
-
Bashkirian (7)
-
Caseyville Formation (1)
-
Lee Formation (1)
-
Morrowan
-
Bloyd Formation (1)
-
-
-
Mattoon Formation (1)
-
Middle Pennsylvanian
-
Allegheny Group (1)
-
Atokan
-
Atoka Formation (6)
-
-
Breathitt Formation (2)
-
Carbondale Formation (4)
-
Desmoinesian
-
Cherokee Group (5)
-
Marmaton Group (3)
-
Wewoka Formation (2)
-
-
Moscovian (23)
-
Paradox Formation (5)
-
Staunton Formation (1)
-
Tradewater Formation (1)
-
-
Minturn Formation (4)
-
Monongahela Group (5)
-
Morrow Formation (8)
-
Red Fork Sandstone (2)
-
Saginaw Formation (1)
-
Smithwick Shale (1)
-
Strawn Series (1)
-
Upper Pennsylvanian
-
Canyon Group (1)
-
Cisco Group (4)
-
Gzhelian (19)
-
Holder Formation (2)
-
Kasimovian (14)
-
Missourian
-
Kansas City Group (6)
-
Lansing Group (7)
-
Rock Lake Shale Member (2)
-
Stanton Formation (3)
-
-
Virgilian
-
Douglas Group (1)
-
Lawrence Formation (1)
-
Lecompton Limestone (1)
-
Oread Limestone (1)
-
Shawnee Group (2)
-
Tonganoxie Sandstone (1)
-
Wabaunsee Group (1)
-
-
-
Watahomigi Formation (1)
-
-
Springer Formation (1)
-
Upper Carboniferous
-
Stephanian (4)
-
Westphalian (7)
-
-
-
Catskill Formation (2)
-
Chattanooga Shale (6)
-
Cow Head Group (7)
-
Deadwood Formation (4)
-
Devonian
-
Beaverhill Lake Group (2)
-
Guilmette Formation (2)
-
Hunsruck Shale (1)
-
Keg River Formation (2)
-
Levis Shale (1)
-
Lost Burro Formation (1)
-
Lower Devonian
-
Battery Point Formation (1)
-
Coeymans Formation (1)
-
Emsian (19)
-
Lochkovian (7)
-
Manlius Formation (1)
-
Oriskany Sandstone (1)
-
Pragian (6)
-
-
Middle Devonian
-
Boyle Dolomite (1)
-
Dundee Limestone (1)
-
Eifelian (11)
-
Elk Point Group (1)
-
Givetian
-
Horn Plateau Formation (1)
-
upper Givetian (1)
-
-
Hamilton Group (6)
-
Ludlowville Formation (1)
-
Marcellus Shale (7)
-
Moscow Formation (5)
-
Onondaga Limestone (1)
-
Prairie Evaporite (2)
-
Tully Limestone (1)
-
-
Miette Complex (1)
-
Muth Quartzite (1)
-
Old Red Sandstone (4)
-
Ponta Grossa Formation (1)
-
Slave Point Formation (1)
-
Swan Hills Formation (2)
-
Traverse Group (2)
-
Upper Devonian
-
Chemung Formation (1)
-
Famennian
-
lower Famennian (4)
-
upper Famennian (4)
-
Wabamun Group (3)
-
-
Frasnian
-
Leduc Formation (5)
-
upper Frasnian (1)
-
-
Grosmont Formation (1)
-
Jefferson Group (1)
-
Kanayut Conglomerate (1)
-
Kellwasser event (3)
-
-
Upper Old Red Sandstone (1)
-
Waterways Formation (2)
-
Zlichovian (1)
-
-
Dunkard Group (4)
-
Earn Group (2)
-
Ellis Bay Formation (8)
-
Exshaw Formation (4)
-
Helderberg Group (2)
-
Honaker Trail Formation (1)
-
Hunton Group (5)
-
Ishbel Group (1)
-
Keyser Limestone (1)
-
Knox Group (4)
-
Laborcita Formation (2)
-
Lisburne Group (1)
-
lower Paleozoic
-
Cape Phillips Formation (4)
-
Conococheague Formation (1)
-
-
Madera Formation (1)
-
Maroon Formation (2)
-
middle Paleozoic (1)
-
Minnelusa Formation (2)
-
New Albany Shale (1)
-
Ordovician
-
Acoite Formation (2)
-
Antelope Valley Limestone (2)
-
Eureka Quartzite (1)
-
Gualcamayo Formation (3)
-
Lexington Limestone (2)
-
Lower Ordovician
-
Arenigian (7)
-
Beekmantown Group (2)
-
El Paso Group (1)
-
Ellenburger Group (9)
-
Fillmore Formation (12)
-
Floian (8)
-
Ibexian (9)
-
Manitou Formation (2)
-
Prairie du Chien Group (1)
-
Saint George Group (3)
-
Shakopee Formation (1)
-
Tremadocian (32)
-
-
Martinsburg Formation (3)
-
Middle Ordovician
-
Bromide Formation (6)
-
Chazy Group (1)
-
Chazyan (1)
-
Dapingian (3)
-
Darriwilian (19)
-
Decorah Shale (2)
-
Everton Formation (1)
-
Galena Dolomite (1)
-
Glenwood Shale (1)
-
Lenoir Limestone (1)
-
Llandeilian (1)
-
Llanvirnian (1)
-
Millbrig Bentonite Bed (1)
-
Platteville Formation (3)
-
Saint Peter Sandstone (5)
-
Simpson Group (5)
-
Table Head Group (1)
-
Whiterockian (6)
-
-
Pogonip Group (4)
-
Trenton Group (5)
-
Upper Ordovician
-
Ashgillian (13)
-
Bighorn Dolomite (3)
-
Caradocian (10)
-
Cincinnatian
-
Maysvillian (1)
-
Richmondian (3)
-
-
Fairview Formation (6)
-
Fish Haven Dolomite (1)
-
Hirnantian (18)
-
Katian (26)
-
Kope Formation (3)
-
Maquoketa Formation (4)
-
Mohawkian (3)
-
Queenston Shale (1)
-
Red River Formation (1)
-
Sandbian (7)
-
Whitewater Formation (1)
-
Wufeng Formation (7)
-
-
Utica Shale (1)
-
Valmy Formation (1)
-
Viola Limestone (6)
-
Womble Shale (1)
-
-
Peel Sound Formation (1)
-
Permian
-
Blaine Formation (3)
-
Chase Group (4)
-
Coconino Sandstone (1)
-
Council Grove Group (4)
-
Cutler Formation (3)
-
Ecca Group (2)
-
Gharif Formation (3)
-
Guadalupian
-
Bell Canyon Formation (4)
-
Brushy Canyon Formation (1)
-
Capitan Formation (3)
-
Capitanian (8)
-
Cherry Canyon Formation (2)
-
Delaware Mountain Group (2)
-
Grayburg Formation (3)
-
Roadian (6)
-
Tansill Formation (5)
-
Wordian (5)
-
-
Hennessey Formation (1)
-
Illawarra Coal Measures (1)
-
Kaibab Formation (2)
-
Kamthi Formation (1)
-
Khuff Formation (8)
-
Longtan Formation (1)
-
Lower Permian
-
Abo Formation (3)
-
Al Khlata Formation (1)
-
Barakar Stage (1)
-
Cherry Canyon Formation (2)
-
Cisuralian
-
Artinskian (9)
-
Asselian (15)
-
Kungurian (10)
-
Sakmarian (11)
-
-
Leonardian
-
Bone Spring Limestone (1)
-
Clear Fork Group (5)
-
-
Opeche Shale (2)
-
Qixia Formation (1)
-
Wolfcampian
-
Hueco Limestone (2)
-
-
-
Lyons Sandstone (6)
-
Maokou Formation (1)
-
McCloud Limestone (1)
-
Middle Permian (32)
-
Park City Formation (1)
-
Phosphoria Formation (3)
-
Rotliegendes (2)
-
Rustler Formation (1)
-
Shihezi Formation (1)
-
Stone Corral Formation (2)
-
Unayzah Formation (4)
-
Upper Permian
-
Changxing Formation (2)
-
Lopingian
-
Changhsingian (11)
-
Wuchiapingian (4)
-
-
Permian-Triassic boundary (36)
-
Raniganj Formation (1)
-
Rio do Rasto Formation (1)
-
Salado Formation (3)
-
Tatarian (1)
-
Zechstein (3)
-
-
Vryheid Formation (1)
-
Wellington Formation (4)
-
Whitehill Formation (1)
-
Yates Formation (4)
-
Yeso Formation (2)
-
-
Pilot Shale (1)
-
Ringerike Sandstone (1)
-
Road River Formation (3)
-
Sauk Sequence (5)
-
Silurian
-
Henryhouse Formation (1)
-
Lower Silurian
-
Brassfield Formation (3)
-
Llandovery
-
Aeronian (8)
-
Rhuddanian (5)
-
Telychian (6)
-
-
Tuscarora Formation (2)
-
Wenlock
-
Homerian (3)
-
Sheinwoodian (1)
-
-
Whirlpool Sandstone (2)
-
-
Middle Silurian
-
Clinton Group (2)
-
Rochester Formation (2)
-
Waldron Shale (1)
-
-
Niagaran (1)
-
Upper Silurian
-
Cayugan
-
Tonoloway Limestone (1)
-
-
Ludlow (6)
-
Pridoli (5)
-
Salina Group (5)
-
-
-
Supai Formation (3)
-
Taiyuan Formation (2)
-
Talchir Formation (4)
-
Tensleep Sandstone (2)
-
Tippecanoe Sequence (1)
-
upper Paleozoic
-
Admire Group (2)
-
Antrim Shale (1)
-
Arkansas Novaculite (2)
-
Bakken Formation (7)
-
Fountain Formation (1)
-
Guandacol Formation (1)
-
Kaskaskia Sequence (1)
-
Kiaman Superchron (1)
-
Shanxi Formation (3)
-
-
Weber Sandstone (1)
-
Woodford Shale (24)
-
-
Phanerozoic (31)
-
Precambrian
-
Adirondack Anorthosite (1)
-
Animikie Group (1)
-
Archean
-
Aravalli System (1)
-
Mesoarchean (2)
-
Neoarchean (3)
-
Paleoarchean (2)
-
Timiskaming Group (1)
-
-
Brockman Iron Formation (1)
-
Central Rand Group (1)
-
Chuar Group (2)
-
Eocambrian (1)
-
Hazel Formation (1)
-
Johnnie Formation (2)
-
Kingston Peak Formation (3)
-
Kisseynew Complex (1)
-
Nonesuch Shale (5)
-
North Shore Volcanics (2)
-
Osler Series (1)
-
Pahrump Series (1)
-
Stirling Quartzite (1)
-
Unkar Group (1)
-
upper Precambrian
-
Proterozoic
-
Algonkian
-
Baraboo Quartzite (1)
-
-
Damara System (1)
-
Huronian (1)
-
Keweenawan
-
Copper Harbor Conglomerate (2)
-
Portage Lake Lava Series (1)
-
-
Mesoproterozoic
-
Belt Supergroup (1)
-
Helena Formation (1)
-
Revett Quartzite (1)
-
Roper Group (1)
-
Stenian (1)
-
-
Miette Group (1)
-
Neoproterozoic
-
Blaini Formation (1)
-
Brioverian (1)
-
Cryogenian (2)
-
Dengying Formation (2)
-
Doushantuo Formation (2)
-
Ediacaran
-
Wonoka Formation (1)
-
-
Hadrynian (1)
-
Infracambrian (1)
-
Marinoan (3)
-
Otavi Group (1)
-
Sturtian (1)
-
Torridonian (1)
-
Vendian (18)
-
Walden Creek Group (1)
-
-
Oronto Group (4)
-
Ortega Group (1)
-
Paleoproterozoic
-
Marquette Range Supergroup (1)
-
Orosirian (1)
-
Rhyacian (1)
-
Wollaston Group (1)
-
-
Sinian
-
Dengying Formation (2)
-
Doushantuo Formation (2)
-
-
-
-
Witwatersrand Supergroup (3)
-
-
Rhenohercynian (1)
-
Saxothuringian (1)
-
Vindhyan (3)
-
-
igneous rocks
-
agglutinates (2)
-
igneous rocks
-
carbonatites (7)
-
feldspathoid rocks (1)
-
hypabyssal rocks (1)
-
kimberlite (14)
-
plutonic rocks
-
anorthosite (2)
-
diabase (3)
-
diorites
-
quartz diorites (3)
-
tonalite (2)
-
-
gabbros
-
olivine gabbro (1)
-
troctolite (1)
-
-
granites
-
A-type granites (4)
-
charnockite (2)
-
leucogranite (1)
-
monzogranite (6)
-
rapakivi (2)
-
S-type granites (1)
-
-
granodiorites (4)
-
ijolite (2)
-
lamproite (6)
-
lamprophyres (4)
-
monzonites (2)
-
pegmatite (1)
-
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Primary terms
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Deep Sea Drilling Project
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IPOD
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Leg 57
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Leg 19
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Leg 22
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Leg 25
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DSDP Site 241 (2)
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Upper Cretaceous
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Lower Jurassic
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Middle Triassic
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Upper Triassic
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upper Mesozoic
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Paleozoic
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Carboniferous
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Desmoinesian
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Moscovian (23)
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Upper Old Red Sandstone (1)
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Zlichovian (1)
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lower Paleozoic
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Ordovician
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Acoite Formation (2)
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Lower Ordovician
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Arenigian (7)
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Beekmantown Group (2)
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Fillmore Formation (12)
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Manitou Formation (2)
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Shakopee Formation (1)
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Tremadocian (32)
-
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Martinsburg Formation (3)
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Middle Ordovician
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Bromide Formation (6)
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Platteville Formation (3)
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Saint Peter Sandstone (5)
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Simpson Group (5)
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Whiterockian (6)
-
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Pogonip Group (4)
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-
Upper Ordovician
-
Ashgillian (13)
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Bighorn Dolomite (3)
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Cincinnatian
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Richmondian (3)
-
-
Fairview Formation (6)
-
Fish Haven Dolomite (1)
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Hirnantian (18)
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Katian (26)
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Kope Formation (3)
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Maquoketa Formation (4)
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Sandbian (7)
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Whitewater Formation (1)
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Wufeng Formation (7)
-
-
Utica Shale (1)
-
Valmy Formation (1)
-
Viola Limestone (6)
-
Womble Shale (1)
-
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Peel Sound Formation (1)
-
Permian
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Blaine Formation (3)
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Chase Group (4)
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Coconino Sandstone (1)
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Council Grove Group (4)
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Cutler Formation (3)
-
Ecca Group (2)
-
Gharif Formation (3)
-
Guadalupian
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Bell Canyon Formation (4)
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Brushy Canyon Formation (1)
-
Capitan Formation (3)
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Capitanian (8)
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Cherry Canyon Formation (2)
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Delaware Mountain Group (2)
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Grayburg Formation (3)
-
Roadian (6)
-
Tansill Formation (5)
-
Wordian (5)
-
-
Hennessey Formation (1)
-
Illawarra Coal Measures (1)
-
Kaibab Formation (2)
-
Kamthi Formation (1)
-
Khuff Formation (8)
-
Longtan Formation (1)
-
Lower Permian
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Abo Formation (3)
-
Al Khlata Formation (1)
-
Barakar Stage (1)
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Cherry Canyon Formation (2)
-
Cisuralian
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Artinskian (9)
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Asselian (15)
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Kungurian (10)
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Sakmarian (11)
-
-
Leonardian
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Bone Spring Limestone (1)
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Clear Fork Group (5)
-
-
Opeche Shale (2)
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Qixia Formation (1)
-
Wolfcampian
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Hueco Limestone (2)
-
-
-
Lyons Sandstone (6)
-
Maokou Formation (1)
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Middle Permian (32)
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Park City Formation (1)
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Rotliegendes (2)
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Rustler Formation (1)
-
Shihezi Formation (1)
-
Stone Corral Formation (2)
-
Unayzah Formation (4)
-
Upper Permian
-
Changxing Formation (2)
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Lopingian
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Changhsingian (11)
-
Wuchiapingian (4)
-
-
Permian-Triassic boundary (36)
-
Raniganj Formation (1)
-
Rio do Rasto Formation (1)
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Salado Formation (3)
-
Tatarian (1)
-
Zechstein (3)
-
-
Vryheid Formation (1)
-
Wellington Formation (4)
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Whitehill Formation (1)
-
Yates Formation (4)
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Yeso Formation (2)
-
-
Pilot Shale (1)
-
Ringerike Sandstone (1)
-
Road River Formation (3)
-
Sauk Sequence (5)
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Silurian
-
Henryhouse Formation (1)
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Lower Silurian
-
Brassfield Formation (3)
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Llandovery
-
Aeronian (8)
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Rhuddanian (5)
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Telychian (6)
-
-
Tuscarora Formation (2)
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Wenlock
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Homerian (3)
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Sheinwoodian (1)
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