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Echinozoa
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Edrioasteroidea (2)
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Homalozoa
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Stylophora (1)
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-
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Mollusca
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Bivalvia
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Cephalopoda
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Ammonoidea (1)
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Gastropoda (4)
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Hyolithes (1)
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Tentaculitida
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Tentaculitidae
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Tentaculites (3)
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-
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Porifera
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Demospongea (1)
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Stromatoporoidea (7)
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Protista
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Foraminifera (2)
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Vermes
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scolecodonts (2)
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-
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Metazoa (2)
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microfossils
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Chitinozoa (10)
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Conodonta
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Idiognathodus (1)
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Ozarkodina (2)
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Panderodus (1)
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Streptognathodus (1)
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Leperditicopida (1)
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problematic microfossils (2)
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palynomorphs
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acritarchs (11)
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miospores
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pollen (2)
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Plantae
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algae
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Chlorophyta
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Chlorophyceae
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Dasycladaceae (1)
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-
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Chrysophyta (1)
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Rhodophyta (1)
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Bryophyta (1)
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problematic fossils
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problematic microfossils (2)
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Pterobranchia (5)
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Tardigrada (1)
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thallophytes (1)
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tracks (1)
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geochronology methods
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Ar/Ar (6)
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paleomagnetism (11)
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U/Pb (36)
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U/Th/Pb (1)
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geologic age
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Cenozoic
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Quaternary
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Tertiary
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Paleogene
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Eocene (1)
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Oligocene
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Bembridge Marls (1)
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-
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-
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Coal Measures (1)
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Mesozoic
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Cretaceous
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Middle Cretaceous (1)
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Upper Cretaceous (1)
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Jurassic
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Kingak Shale (1)
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Lower Jurassic (1)
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Middle Jurassic (1)
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Triassic
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Lower Triassic
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Permian-Triassic boundary (1)
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Middle Triassic (1)
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Shublik Formation (1)
-
-
-
Paleozoic
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Cambrian
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Acadian (2)
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Lower Cambrian
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Terreneuvian (1)
-
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Middle Cambrian (4)
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Upper Cambrian
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Bonneterre Formation (1)
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Furongian (1)
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Goldenville Formation (1)
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Orr Formation (1)
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Steptoean (1)
-
-
-
Carboniferous
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Lower Carboniferous
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Asbian (1)
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Dinantian (2)
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Mabou Group (1)
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Mississippian
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Lower Mississippian
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Joana Limestone (1)
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Kekiktuk Conglomerate (1)
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Kinderhookian (1)
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Osagian (1)
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Pocono Formation (1)
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Middle Mississippian
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Visean (1)
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Upper Mississippian
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Hartselle Sandstone (1)
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Heath Formation (1)
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Serpukhovian (2)
-
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Windsor Group (1)
-
-
Pennsylvanian
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Joggins Formation (1)
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Upper Pennsylvanian
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Virgilian
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Plattsmouth Limestone Member (1)
-
-
-
-
Upper Carboniferous
-
Millstone Grit (1)
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-
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Catskill Formation (2)
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Devonian
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Lost Burro Formation (1)
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Lower Devonian
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Battery Point Formation (1)
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Coeymans Formation (1)
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Emsian (12)
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Gedinnian (2)
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Helderbergian (1)
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Lochkovian (16)
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Manlius Formation (4)
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Pragian (6)
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Middle Devonian
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Eifelian (3)
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Givetian (3)
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Onondaga Limestone (1)
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Old Red Sandstone (20)
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Upper Devonian
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Famennian (2)
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Frasnian
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upper Frasnian (1)
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-
Kellwasser event (1)
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-
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Ellis Bay Formation (2)
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Helderberg Group (2)
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Horton Group (1)
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Keyser Limestone (2)
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lower Paleozoic
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Cape Phillips Formation (11)
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Matapedia Group (1)
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Ordovician
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Acoite Formation (1)
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Lower Ordovician
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Arenigian (1)
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Floian (1)
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Tremadocian
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Halifax Formation (1)
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Middle Ordovician
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Ammonoosuc Volcanics (1)
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Darriwilian (3)
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Llandeilian (2)
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Llanvirnian (2)
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Upper Ordovician
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Ashgillian (5)
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Caradocian (3)
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Cincinnatian
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Richmondian (1)
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Hirnantian (5)
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Katian (2)
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Sandbian (1)
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-
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Permian
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Guadalupian (1)
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Longtan Formation (1)
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Lower Permian (1)
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Upper Permian
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Permian-Triassic boundary (1)
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-
-
Road River Formation (1)
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Silurian
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Bainbridge Formation (1)
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Henryhouse Formation (1)
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Lower Silurian
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Llandovery
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Aeronian (2)
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Rhuddanian (3)
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Telychian (5)
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Wenlock
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Homerian (12)
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Sheinwoodian (5)
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-
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Middle Silurian
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Roberts Mountains Formation (1)
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Rochester Formation (2)
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Niagaran (1)
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Upper Silurian
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Bloomsburg Formation (1)
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Cayugan
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Tonoloway Limestone (2)
-
-
Ludlow
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Gorstian (5)
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Ludfordian (7)
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Pridoli (26)
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Salina Group (4)
-
-
-
upper Paleozoic (4)
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Phanerozoic (2)
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Precambrian
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Archean
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Neoarchean (1)
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-
upper Precambrian
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Proterozoic
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Neoproterozoic
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Ediacaran (5)
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Riphean (1)
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Tonian (2)
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Vendian (2)
-
-
-
-
-
Rhenohercynian (1)
-
-
igneous rocks
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igneous rocks
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peperite (1)
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plutonic rocks
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appinite (2)
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diorites
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tonalite (1)
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trondhjemite (1)
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gabbros (2)
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lamprophyres (1)
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volcanic rocks
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dacites (1)
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pyroclastics
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ignimbrite (2)
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tuff (1)
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-
-
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ophiolite (2)
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volcanic ash (4)
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metamorphic rocks
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K-bentonite (3)
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metamorphic rocks
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gneisses
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metaigneous rocks
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metavolcanic rocks (1)
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schists
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ophiolite (2)
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minerals
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calcite (2)
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halides
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chlorides
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K-bentonite (3)
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minerals (1)
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phosphates
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silicates
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orthosilicates
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nesosilicates
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chloritoid (1)
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zircon group
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zircon (26)
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-
-
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sheet silicates
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chlorite group
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chlorite (2)
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clay minerals
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smectite (1)
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illite (3)
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mica group
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muscovite (2)
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-
-
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sulfates
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alum (1)
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gypsum (1)
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-
sulfides
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bornite (1)
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chalcopyrite (1)
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pyrite (3)
-
-
-
Primary terms
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absolute age (43)
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Africa
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North Africa
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Algeria
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Berkine Basin (2)
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Atlas Mountains
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Anti-Atlas (1)
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Ghadames Basin (3)
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Illizi Basin (1)
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Libya
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Morocco
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Anti-Atlas (1)
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Rabat Morocco (1)
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Tafilalt (1)
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Tunisia (1)
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Sahara (4)
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Arctic Ocean
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Russian Arctic
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Asia
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Altai Russian Federation
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Central Asia
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Far East
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Japan
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Laos (1)
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Krasnoyarsk Russian Federation
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Kyrgyzstan (1)
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Middle East
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Salair Ridge (1)
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Atlantic Ocean
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atmosphere (1)
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Australasia
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Australia
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bacteria (2)
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biogeography (35)
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Canada
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Meguma Terrane (4)
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Newfoundland and Labrador
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Ontario
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Quebec
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Queen Elizabeth Islands
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Richardson Mountains (2)
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Western Canada
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carbon
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C-13/C-12 (36)
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organic carbon (4)
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Caspian Sea (1)
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catalogs (1)
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Cenozoic
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Quaternary
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Holocene
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upper Holocene (1)
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Tertiary
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Paleogene
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Eocene (1)
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Oligocene
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Bembridge Marls (1)
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Chordata
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Vertebrata
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Agnatha
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Heterostraci (4)
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Osteostraci (1)
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Pisces
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Acanthodii
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Chondrichthyes (2)
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Osteichthyes
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Sarcopterygii (2)
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Placodermi (1)
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Thelodonti (4)
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clay mineralogy (3)
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climate change (3)
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continental drift (6)
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Europe
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Alps
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Baltic region
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Central Europe
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Germany
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Poland
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Italy
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Scotland
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faults (24)
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Graptolithina
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heat flow (2)
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ichnofossils
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igneous rocks
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intrusions (8)
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Invertebrata
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Insecta (1)
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Trilobitomorpha
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Trilobita
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Phacopida (1)
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Brachiopoda
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Articulata
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Rhynchonellida
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Inarticulata (1)
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Bryozoa
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Cnidaria
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Anthozoa
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Zoantharia
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Rugosa (6)
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Tabulata
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Favositida
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Favositidae
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Favosites (1)
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Hydrozoa (2)
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Echinodermata
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Crinozoa
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Blastoidea (2)
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Crinoidea (19)
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Echinozoa
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Homalozoa
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Mollusca
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Bivalvia
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Cephalopoda
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Nautiloidea (2)
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Gastropoda (4)
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Tentaculitida
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Tentaculitidae
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Tentaculites (3)
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Porifera
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Demospongea (1)
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Stromatoporoidea (7)
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Protista
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Foraminifera (2)
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Vermes
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isotopes
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radioactive isotopes
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Cs-137 (1)
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Pb-210 (1)
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Sm-147/Nd-144 (1)
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stable isotopes
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C-13/C-12 (36)
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Hf-177/Hf-176 (2)
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N-15/N-14 (2)
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Nd-144/Nd-143 (4)
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O-18/O-16 (19)
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S-34/S-32 (3)
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Sm-147/Nd-144 (1)
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Sr-87/Sr-86 (8)
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lava (2)
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mantle (1)
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maps (1)
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Mesozoic
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Cretaceous
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Upper Cretaceous (1)
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Jurassic
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Kingak Shale (1)
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Triassic
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Lower Triassic
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Permian-Triassic boundary (1)
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Shublik Formation (1)
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metal ores
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metals
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actinides
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uranium (2)
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alkali metals
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cesium
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Cs-137 (1)
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alkaline earth metals
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barium (1)
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strontium
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Sr-87/Sr-86 (8)
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chromium (1)
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hafnium
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Hf-177/Hf-176 (2)
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iron (1)
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lead
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Pb-210 (1)
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rare earths
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neodymium
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Nd-144/Nd-143 (4)
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Sm-147/Nd-144 (1)
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samarium
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Sm-147/Nd-144 (1)
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vanadium (1)
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metamorphic rocks
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gneisses
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granite gneiss (1)
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tonalite gneiss (1)
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serpentinite (1)
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metaplutonic rocks (1)
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metasedimentary rocks (5)
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metavolcanic rocks (1)
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metamorphism (11)
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Mexico
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mineral deposits, genesis (2)
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museums (1)
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nitrogen
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N-15/N-14 (2)
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North America
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Appalachian Basin (5)
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Appalachians
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Blue Ridge Province (1)
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Basin and Range Province (1)
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Great Plains
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Michigan Basin (3)
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North American Cordillera
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Ogilvie Mountains (1)
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Rocky Mountains
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Western Canada Sedimentary Basin (2)
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oil and gas fields (3)
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orogeny (14)
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oxygen
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O-18/O-16 (19)
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paleobotany (1)
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paleoclimatology (20)
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paleoecology (61)
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paleogeography (68)
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paleomagnetism (11)
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Paleozoic
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Cambrian
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Acadian (2)
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Lower Cambrian
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Terreneuvian (1)
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Middle Cambrian (4)
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Upper Cambrian
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Bonneterre Formation (1)
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Furongian (1)
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Goldenville Formation (1)
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Orr Formation (1)
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Steptoean (1)
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-
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Carboniferous
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Lower Carboniferous
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Asbian (1)
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Dinantian (2)
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Mabou Group (1)
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Mississippian
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Lower Mississippian
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Joana Limestone (1)
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Kekiktuk Conglomerate (1)
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Kinderhookian (1)
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Osagian (1)
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Pocono Formation (1)
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Middle Mississippian
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Visean (1)
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Upper Mississippian
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Hartselle Sandstone (1)
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Heath Formation (1)
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Serpukhovian (2)
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Windsor Group (1)
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Pennsylvanian
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Joggins Formation (1)
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Upper Pennsylvanian
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Virgilian
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Plattsmouth Limestone Member (1)
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-
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Upper Carboniferous
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Millstone Grit (1)
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-
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Catskill Formation (2)
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Devonian
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Lost Burro Formation (1)
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Lower Devonian
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Battery Point Formation (1)
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Coeymans Formation (1)
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Emsian (12)
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Gedinnian (2)
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Helderbergian (1)
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Lochkovian (16)
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Manlius Formation (4)
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Pragian (6)
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Middle Devonian
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Eifelian (3)
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Givetian (3)
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Onondaga Limestone (1)
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Old Red Sandstone (20)
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Upper Devonian
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Famennian (2)
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Frasnian
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upper Frasnian (1)
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Kellwasser event (1)
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-
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Ellis Bay Formation (2)
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Helderberg Group (2)
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Horton Group (1)
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Keyser Limestone (2)
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lower Paleozoic
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Cape Phillips Formation (11)
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Matapedia Group (1)
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Ordovician
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Acoite Formation (1)
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Lower Ordovician
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Arenigian (1)
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Floian (1)
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Tremadocian
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Halifax Formation (1)
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Middle Ordovician
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Ammonoosuc Volcanics (1)
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Dapingian (1)
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Darriwilian (3)
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Llandeilian (2)
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Llanvirnian (2)
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Upper Ordovician
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Ashgillian (5)
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Caradocian (3)
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Cincinnatian
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Richmondian (1)
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Hirnantian (5)
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Katian (2)
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Sandbian (1)
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Permian
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Guadalupian (1)
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Longtan Formation (1)
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Lower Permian (1)
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Upper Permian
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Permian-Triassic boundary (1)
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-
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Road River Formation (1)
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Silurian
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Bainbridge Formation (1)
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Henryhouse Formation (1)
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Lower Silurian
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Llandovery
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Aeronian (2)
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Rhuddanian (3)
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Telychian (5)
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Wenlock
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Homerian (12)
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Sheinwoodian (5)
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-
-
Middle Silurian
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Roberts Mountains Formation (1)
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Rochester Formation (2)
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Niagaran (1)
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Upper Silurian
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Bloomsburg Formation (1)
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Cayugan
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Tonoloway Limestone (2)
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-
Ludlow
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Gorstian (5)
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Ludfordian (7)
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Pridoli (26)
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Salina Group (4)
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upper Paleozoic (4)
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palynology (3)
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palynomorphs
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acritarchs (11)
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Chitinozoa (10)
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Dinoflagellata (1)
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miospores
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pollen (2)
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paragenesis (1)
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petroleum
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natural gas (5)
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shale oil (1)
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petrology (3)
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Phanerozoic (2)
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Plantae
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algae
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Chlorophyta
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Chlorophyceae
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Dasycladaceae (1)
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Chrysophyta (1)
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Rhodophyta (1)
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Bryophyta (1)
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plate tectonics (28)
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Precambrian
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Archean
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Neoarchean (1)
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upper Precambrian
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Proterozoic
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Neoproterozoic
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Ediacaran (5)
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Riphean (1)
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Tonian (2)
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Vendian (2)
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-
-
-
-
problematic fossils
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problematic microfossils (2)
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Pterobranchia (5)
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reefs (12)
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sea water (1)
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