Subject
Geology, Stratigraphic
83
Geology
65
Paleontology
29
Dinosaurs
7
Paleobotany
7
Geology, Structural
6
Petrology
6
Arizona
5
California
5
Mines and mineral resources
4
Birds Evolution
3
Magmatism
3
Mammals, Fossil
3
Vertebrates, Fossil
3
Batholiths
2
Birds, Fossil
2
Borings
2
Folds (Geology)
2
Orogenic belts
2
Paleogeography
2
Plate tectonics
2
Reptiles, Fossil
2
Angiosperms, Fossil
1
Animal behavior
1
Animals, Fossil
1
Archaeological expeditions
1
Biotic communities
1
Coal
1
Coast Ranges
1
Continental margins
1
Continental shelf
1
Dinosaur tracks
1
Dinosaurs Behavior
1
Dinosaurs Ecology
1
Dinosaurs Evolution
1
Dinosaurs Extinction
1
Dinosaurs Flight
1
Discoveries in science
1
Earth sciences International cooperation
1
Ecology
1
Evolution (Biology)
1
Evolutionary paleobiology
1
Feathers, Fossil
1
Florida
1
Foraminifera, Fossil
1
Formations (Geology)
1
Fossils
1
Gneiss
1
Groundwater
1
Ichnology
1
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