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Antarctica
2
Cretaceous
2
Paleontology
2
Taeniopteris
2
Byers Peninsula
1
Cerro Negro Formation
1
Cladophlebis
1
Elatocladus
1
Geochronology
1
Geology
1
Gymnospermae
1
Livingston Island
1
Lueheia
1
Pentoxylales
1
Phyllopteroides
1
Pseudoctenis
1
South Shetland Islands
1
Sphenopteris
1
Systematics
1
Usnea
1
igneous intrusion
1
paleobotany
1
pyroclastic deposit
1
radiometric method
1
taxonomy
1
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