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Ammonoidea
1
Ammonoids
1
Ancyloceratidae
1
Argentina
1
Austral Basin
1
Boreal
1
Chile
1
Cretaceous-Paleogene boundary
1
Crioceratitinae
1
Hauterivian
1
Nannobacteria
1
Neuquén Basin
1
Patagonia
1
South America
1
Stromatolites
1
Volcanic front
1
Western Gondwana
1
ammonite
1
endemic species
1
fossil record
1
sea level change
1
species diversity
1
taxonomy
1
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1
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2