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ACRITARCH DISTRIBUTION
EVOLUTION
1
GEOGRAPHY
1
Geology
1
Geosciences
1
IAPETUS OCEAN
1
MIDDLE ORDOVICIAN
1
Multidisciplinary
1
NORTH-ATLANTIC REGION
1
PALEOBIOGEOGRAPHY
1
PALEOZOIC PALEOGEOGRAPHY
1
acritarchs
1
chitinozoans
1
graptolites
1
ordovician
1
palaeobiogeography
1
radiolarians
1
trilobites
1
vertebrates
1
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