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Insecta
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Rotaliina
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Radiolaria
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Osculosida
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Fusulinina
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Paleogene
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Coal Measures (2)
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Mesozoic
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Dakota Formation (1)
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Lower Cretaceous
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Mancos Shale (1)
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Greenhorn Limestone (1)
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Austin Chalk (1)
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K-T boundary (1)
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Lewis Shale (1)
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Niobrara Formation (2)
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Jurassic
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Lower Jurassic (2)
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Upper Jurassic
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Bossier Formation (1)
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Haynesville Formation (2)
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Josephine Ophiolite (1)
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lower Mesozoic (1)
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Triassic
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Lower Triassic
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Bunter (5)
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Permian-Triassic boundary (6)
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Middle Triassic
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Muschelkalk (1)
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Yanchang Formation (1)
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Wingate Sandstone (1)
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Paleozoic
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Arbuckle Group (4)
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Bird Spring Formation (6)
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Cambrian
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Upper Cambrian
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Bonneterre Formation (1)
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Timbered Hills Group (1)
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Carboniferous
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Benxi Formation (4)
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Asbian (2)
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Upper Mississippian
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Namurian (5)
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Lower Pennsylvanian
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Middle Pennsylvanian
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Atokan
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Atoka Formation (1)
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Desmoinesian (5)
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Paradox Formation (2)
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Monongahela Group (3)
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Strawn Series (2)
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Upper Pennsylvanian
-
Canyon Group (3)
-
Cisco Group (9)
-
Gzhelian (11)
-
Holder Formation (2)
-
Kasimovian (4)
-
Missourian
-
Kansas City Group (1)
-
Lansing Group (2)
-
-
Virgilian
-
Douglas Group (1)
-
Shawnee Group (1)
-
Wabaunsee Group (1)
-
-
-
-
Upper Carboniferous
-
Stephanian (6)
-
Uralian (1)
-
Westphalian (6)
-
-
-
Casper Formation (2)
-
Devonian
-
Lower Devonian (6)
-
Middle Devonian
-
Marcellus Shale (2)
-
-
Thirtyone Formation (2)
-
Upper Devonian
-
Famennian
-
lower Famennian (1)
-
-
Frasnian (1)
-
-
-
Dunkard Group (3)
-
Hunton Group (1)
-
Ishbel Group (1)
-
Itarare Subgroup (5)
-
Laborcita Formation (5)
-
Lisburne Group (1)
-
lower Paleozoic (2)
-
Madera Formation (1)
-
Maroon Formation (3)
-
Minnelusa Formation (6)
-
Oquirrh Formation (1)
-
Ordovician
-
Lower Ordovician
-
Ellenburger Group (4)
-
Kindblade Formation (1)
-
-
Middle Ordovician
-
Saint Peter Sandstone (1)
-
Simpson Group (2)
-
-
Upper Ordovician
-
Juniata Formation (1)
-
Wufeng Formation (1)
-
-
Utica Shale (1)
-
-
Permian
-
Americus Limestone Member (3)
-
Blaine Formation (1)
-
Chase Group (5)
-
Coconino Sandstone (1)
-
Cottonwood Limestone (2)
-
Council Grove Group (9)
-
Cutler Formation (7)
-
Ecca Group (7)
-
Echooka Formation (1)
-
Eskridge Shale (1)
-
Gharif Formation (5)
-
Glorieta Sandstone (2)
-
Guadalupian
-
Bell Canyon Formation (8)
-
Brushy Canyon Formation (9)
-
Capitan Formation (2)
-
Capitanian (7)
-
Cherry Canyon Formation (19)
-
Delaware Mountain Group (6)
-
Grayburg Formation (2)
-
Queen Formation (1)
-
Roadian (9)
-
Tansill Formation (1)
-
Wordian (10)
-
-
Hennessey Formation (1)
-
Hughes Creek Shale (2)
-
Kaibab Formation (3)
-
Khuff Formation (4)
-
Longtan Formation (1)
-
Lower Permian
-
Abo Formation (20)
-
Al Khlata Formation (12)
-
Autunian (13)
-
Barakar Stage (4)
-
Cherry Canyon Formation (19)
-
Cisuralian
-
Artinskian (36)
-
Asselian (34)
-
Kungurian (27)
-
Sakmarian (37)
-
-
Leman Sandstone Formation (22)
-
Leonardian
-
Bone Spring Limestone (22)
-
Clear Fork Group (24)
-
-
Opeche Shale (4)
-
Qixia Formation (13)
-
Wichita Group (13)
-
Wolfcampian
-
Hueco Limestone (10)
-
-
-
Lyons Sandstone (3)
-
Maokou Formation (7)
-
McCloud Limestone (5)
-
Meade Peak Member (1)
-
Middle Permian (24)
-
Newcastle Coal Measures (1)
-
Park City Formation (5)
-
Phosphoria Formation (6)
-
Red Eagle Limestone (1)
-
Retort Phosphatic Shale Member (2)
-
Rio Bonito Formation (4)
-
Rotliegendes (17)
-
Saxonian (2)
-
Shihezi Formation (3)
-
Stearns Shale (1)
-
Toroweap Formation (1)
-
Unayzah Formation (8)
-
Upper Permian
-
Changxing Formation (1)
-
Kazanian (2)
-
Lopingian
-
Changhsingian (6)
-
Wuchiapingian (5)
-
-
Permian-Triassic boundary (6)
-
Raniganj Formation (1)
-
Salado Formation (1)
-
Zechstein (6)
-
-
Vryheid Formation (4)
-
Wellington Formation (6)
-
Whitehill Formation (2)
-
Wreford Limestone (1)
-
Yeso Formation (4)
-
-
Silurian
-
Fusselman Dolomite (2)
-
Lower Silurian
-
Qalibah Formation (1)
-
-
Middle Silurian
-
Rose Hill Formation (1)
-
-
Upper Silurian
-
Wristen Formation (1)
-
-
-
Supai Formation (2)
-
Taiyuan Formation (7)
-
Talchir Formation (5)
-
Tensleep Sandstone (1)
-
upper Paleozoic
-
Admire Group (4)
-
Bakken Formation (2)
-
Copacabana Group (3)
-
Dwyka Formation (6)
-
Kiaman Superchron (1)
-
Pictou Group (2)
-
Shanxi Formation (11)
-
Tirrawarra Sandstone (1)
-
Wood River Formation (1)
-
-
Weber Sandstone (2)
-
Wells Formation (1)
-
Woodford Shale (3)
-
-
Phanerozoic (4)
-
Precambrian
-
Archean
-
Neoarchean (1)
-
-
Carrizo Mountain Formation (1)
-
Chuar Group (1)
-
Transvaal Supergroup (1)
-
upper Precambrian
-
Proterozoic
-
Malmani Subgroup (1)
-
Mesoproterozoic (3)
-
Neoproterozoic
-
Ediacaran (1)
-
Tonian (1)
-
-
Paleoproterozoic (2)
-
Pretoria Group (1)
-
-
-
Ventersdorp Supergroup (1)
-
-
Rhenohercynian (1)
-
-
igneous rocks
-
igneous rocks
-
feldspathoid rocks (1)
-
picrite (1)
-
plutonic rocks
-
diabase (5)
-
diorites
-
diorite porphyry (1)
-
plagiogranite (2)
-
quartz diorites (2)
-
tonalite (1)
-
-
gabbros
-
norite (1)
-
troctolite (2)
-
-
granites
-
A-type granites (3)
-
granite porphyry (1)
-
I-type granites (2)
-
leucogranite (2)
-
microgranite (1)
-
monzogranite (2)
-
S-type granites (2)
-
-
granodiorites (7)
-
lamproite (2)
-
lamprophyres (3)
-
syenites
-
syenite porphyry (1)
-
-
ultramafics
-
peridotites
-
dunite (2)
-
lherzolite (1)
-
-
pyroxenite
-
websterite (1)
-
-
-
urtite (1)
-
-
porphyry (3)
-
volcanic rocks
-
adakites (2)
-
andesites (1)
-
basalts
-
alkali basalts
-
trachybasalts (1)
-
trachydolerite (1)
-
-
flood basalts (2)
-
mid-ocean ridge basalts (4)
-
ocean-island basalts (1)
-
tholeiite (1)
-
trap rocks (2)
-
-
pyroclastics
-
ignimbrite (3)
-
tuff (5)
-
-
rhyodacites (2)
-
rhyolites (6)
-
trachytes (1)
-
-
-
ophiolite (6)
-
volcanic ash (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
cataclasites (2)
-
eclogite (1)
-
gneisses
-
granite gneiss (1)
-
orthogneiss (1)
-
sillimanite gneiss (1)
-
-
granulites (2)
-
marbles (1)
-
metaigneous rocks
-
metabasalt (1)
-
metabasite (2)
-
serpentinite (2)
-
-
metasedimentary rocks
-
metapelite (1)
-
-
metasomatic rocks
-
serpentinite (2)
-
skarn (2)
-
-
metavolcanic rocks (2)
-
migmatites (1)
-
mylonites
-
pseudotachylite (1)
-
-
phyllites (1)
-
quartzites (3)
-
schists
-
greenstone (1)
-
tourmalinite (1)
-
-
-
ophiolite (6)
-
turbidite (12)
-
-
minerals
-
arsenides
-
arsenopyrite (1)
-
-
carbonates
-
aragonite (1)
-
calcite (13)
-
dawsonite (2)
-
dolomite (16)
-
shortite (1)
-
-
halides
-
chlorides
-
halite (3)
-
-
-
minerals (2)
-
native elements
-
graphite (2)
-
-
oxides
-
cassiterite (1)
-
chrome spinel (1)
-
cryptomelane (1)
-
hematite (6)
-
hollandite (1)
-
ilmenite (1)
-
iron oxides (1)
-
magnetite (1)
-
rutile (1)
-
uraninite (1)
-
-
phosphates
-
apatite (5)
-
fluorapatite (1)
-
monazite (2)
-
-
silicates
-
framework silicates
-
feldspar group
-
alkali feldspar
-
amazonite (1)
-
K-feldspar (3)
-
-
plagioclase
-
albite (1)
-
-
-
silica minerals
-
chalcedony (1)
-
quartz (10)
-
-
-
orthosilicates
-
nesosilicates
-
garnet group (3)
-
olivine group
-
olivine (2)
-
-
sillimanite (1)
-
zircon group
-
zircon (59)
-
-
-
-
sheet silicates
-
chlorite group
-
chlorite (2)
-
-
clay minerals
-
dickite (4)
-
halloysite (1)
-
kaolinite (9)
-
smectite (5)
-
-
illite (12)
-
mica group
-
biotite (3)
-
glauconite (1)
-
muscovite (3)
-
phlogopite (2)
-
-
sepiolite (2)
-
-
-
sulfates
-
alunite (2)
-
anhydrite (10)
-
barite (1)
-
gypsum (2)
-
-
sulfides
-
arsenopyrite (1)
-
chalcopyrite (1)
-
marcasite (1)
-
pyrite (4)
-
pyrrhotite (1)
-
sphalerite (1)
-
-
sulfosalts
-
sulfarsenites
-
tennantite (1)
-
-
sulfostannates
-
stannite (1)
-
-
-
tungstates
-
scheelite (1)
-
-
-
Primary terms
-
absolute age (94)
-
Africa
-
Kalahari Desert (1)
-
Namib Desert (1)
-
North Africa
-
Morocco
-
Rif (2)
-
-
Tunisia (1)
-
-
Southern Africa
-
Botswana (2)
-
Kalahari Craton (1)
-
Karoo Basin (10)
-
Namibia (3)
-
South Africa
-
Cape fold belt (1)
-
Cape Province region
-
-
-
-