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taxonomy
Anura
5
morphology
5
frog
4
Amphibia
3
Argentina
3
Cretaceous
3
Pipoidea
3
South America
3
fossil record
3
phylogeny
3
Jurassic
2
Patagonia
2
Pipidae
2
Spain
2
fossil
2
osteology
2
parsimony analysis
2
phylogenetics
2
Animals
1
Araripe Basin
1
Archaeobatrachians
1
Avitabatrachus
1
Barremian
1
Biological Evolution
1
Brazil
1
Buenos Aires [Argentina]
1
Candeleros Formation
1
Catalonia
1
Cenomanian-Turonian boundary
1
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3
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4JOUR
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5
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7