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Subjects
- Fossils[remove]49
- Geological Phenomena6
- Paleontology5
- Wyoming4
- Fishes -- classification3
- Mastodons3
- Mollusca -- classification3
- North America3
- United States3
- Alismatales -- classification2
- Amphibians -- classification2
- Anthozoa2
- Biological Evolution2
- California2
- Invertebrates2
- Kansas2
- Mammals2
- New Mexico2
- Plants -- classification2
- Reptiles2