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Argentina
Biostratigraphy
Carboniferous
2
Carboniferous-Permian boundary
2
Geochronology
Invertebrata
2
La Rioja
2
La Rioja [Argentina]
2
Paleopalynology
2
Permian
2
Raistrickia
2
South America
Vittatina
2
age determination
2
biostratigraphy
2
biozonation
2
fossil assemblage
2
geochronology
2
invertebrate
2
marine environment
2
palynology
2
stratotype
2
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1
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2