Figure 51. A map of the North Unit of Theodore Roosevelt National Park with paleontological potential indicated by colors. Green indicates a geologic unit that has produced fossils in the park. Yellow units have not yet produced fossils in the park, but might. Red units have not produced fossils and are unlikely to do so (igneous and high-grade metamorphic rocks, etc.). Most of the map is green.
Figure 51. Map indicating paleontological potential of geologic map units in the North Unit of THRO. The Bullion Creek and Sentinel Butte Formations have yielded fossils within THRO. Quaternary deposits within THRO are potentially fossiliferous.
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