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Ammonoidea
2
Argentina
Bivalvia
Jurassic
2
South America
Ammonite Zonation
1
Ammonoids
1
Andes
1
Anthozoa
1
Biostratigraphy
1
Bivalve shells
1
Bivalves
1
Brachiopoda
1
Brachiopods
1
Capra ibex
1
Chemostratigraphy
1
Choristoceras
1
Foraminifera
1
Gastropoda
1
Gryphaea
1
Invertebrata
1
Nautilida
1
Nautiloidea
1
Neuquen Basin
1
Ostracoda
1
Planorbis
1
Pliensbachian
1
Radiolaria (protozoans)
1
Triassic
1
Triassic/Jurassic boundary
1
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1
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2