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Biogeography
5
British Columbia
5
Canadian Arctic
5
Dispersal
Early Triassic
5
Mesozoic
Phylogeny
Siberia
5
Similarity-distance decay
5
Spitsbergen
5
Triassic
5
western USA
5
Ammonoid
4
Morphology
4
Ammonoidea
1
Life sciences
1
ammonoid
1
archeo
1
envir
1
medicine and health care
1
morphology
1
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